Delisa is designing a website that will be viewable on both computers and mobile devices, so the website as it is seen on a mobile device is proportional to the website as it is seen on a computer. The diagonal of Delisa's computer monitor is 21 inches, and the diagonal of Delisa's tablet is 9.4 inches.
If an image is 20 centimeters wide on the website when it's displayed on Delisa's computer, how wide should the image be on the tablet? Round to the nearest tenth of a millimeter, if necessary.
To find the width of the image on the tablet, we can use the concept of proportional scaling based on the diagonal sizes of the devices.
Let x be the width of the image on the tablet.
Since the diagonals of the devices are proportional to the size of the screen, we can set up the following proportion:
(20 cm) / (21 inches) = x / 9.4 inches
Cross multiplying, we get:
21x = 188
x = 188 / 21
x ≈ 8.95 cm
Therefore, the image should be approximately 8.95 cm wide on Delisa's tablet.