Get Matching Aspect Ratios for Dual Monitors

I recently replaced one of my monitor I use in my dual monitor set up. My left, primary monitor is a 22 inch using 1680 x 1050 as the recommended resolution. My new, right monitor is a 21.5 inch using 1920 x 1090.

left = 16:10 aspect ratio   right = 16:9 ratio

The right one turns out to be wider and not as tall.

When moving screens from one to the other, they don't match. If I try to make them match in the resolution of the right to that of the left, I get blurrier display and vertical black bars on the left and right and a smaller display.

I like having matching resolutions for my dual monitors.

This table from http://www.prismo.ch/comparisons/desktop.php is a useful guide.

Desktop LCD Monitor Comparison (Pixel Table)

This table shows the screen resolution, pixel density (pixel pitch in pixels per inch, ppi), size of one square pixel, aspect ratio of the screen, number of pixels (megapixels or MP), and pixel area gain compared to a 1024 by 768 pixel XGA resolution for various display sizes (measured by the viewable diagonal).

Size	Resolution	Density	Pixel Size	Ratio	Pixels	Gain
14.1"	1024 x 768	90.8 ppi	0.2798 mm	4:3	0.75 MP	100%
14"	1366 x 768	111.9 ppi	0.2269 mm	~16:9	1.00 MP	133%
15"	1024 x 768	85.3 ppi	0.2977 mm	4:3	0.75 MP	100%
17"	1280 x 768	87.8 ppi	0.2893 mm	5:3	0.94 MP	125%
17"	1280 x 1024	96.4 ppi	0.2634 mm	5:4	1.25 MP	167%
17"	1440 x 900	99.9 ppi	0.2543 mm	16:10	1.24 MP	165%
18"	1280 x 1024	91.1 ppi	0.2789 mm	5:4	1.25 MP	167%
18.4"	1366 x 768	85.2 ppi	0.2982 mm	~16:9	1.0 MP	133%
19"	1280 x 1024	86.3 ppi	0.2944 mm	5:4	1.25 MP	167%
19"	1440 x 900	89.4 ppi	0.2842 mm	16:10	1.24 MP	165%
19"	1680 x 1050	104.3 ppi	0.2436 mm	16:10	1.68 MP	224%
20"	1400 x 1050	87.5 ppi	0.2903 mm	4:3	1.4 MP	187%
20"	1600 x 900	91.8 ppi	0.2767 mm	16:9	1.37 MP	183%
20"	1680 x 1050	99.1 ppi	0.2564 mm	16:10	1.68 MP	224%
20.1"	1600 x 1200	99.5 ppi	0.2553 mm	4:3	1.83 MP	244%
21"	1680 x 1050	94.3 ppi	0.2692 mm	16:10	1.68 MP	224%
21.3"	1600 x 1200	93.9 ppi	0.2705 mm	4:3	1.83 MP	244%
21.5"	1920 x 1080	102.5 ppi	0.2479 mm	16:9	1.98 MP	264%
22"	1600 x 1024	86.3 ppi	0.2942 mm	25:16	1.56 MP	208%
22"	1680 x 1050	90.1 ppi	0.2821 mm	16:10	1.68 MP	224%
22"	1920 x 1080	100.1 ppi	0.2537 mm	16:9	1.98 MP	264%
22.2"	1920 x 1200	102 ppi	0.2490 mm	16:10	2.2 MP	293%
22.2"	3840 x 2400	204 ppi	0.1245 mm	16:10	8.79 MP	1'172%
23"	1920 x 1080	95.8 ppi	0.2652 mm	16:9	1.98 MP	264%
23"	1920 x 1200	98.4 ppi	0.258 mm	16:10	2.2 MP	293%
24"	1920 x 1080	91.8 ppi	0.2767 mm	16:9	1.98 MP	264%
24"	1920 x 1200	94.3 ppi	0.2692 mm	16:10	2.2 MP	293%
26"	1920 x 1200	87.1 ppi	0.2917 mm	16:10	2.2 MP	293%
27"	1920 x 1080	81.6 ppi	0.3113 mm	16:9	1.98 MP	264%
27"	1920 x 1200	83.9 ppi	0.3029 mm	16:10	2.2 MP	293%
27"	2560 x 1440	108.8 ppi	0.2335 mm	16:9	3.52 MP	469%
30"	2560 x 1600	100.6 ppi	0.2524 mm	16:10	3.91 MP	521%
32"	1024 x 768	40 ppi	0.635 mm	4:3	0.75 MP	100%
40"	1024 x 768	32 ppi	0.7938 mm	4:3	0.75 MP	100%