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 if Delisa's computer monitor is 21 inches, and the diagonal of Delisa's tablet is 9.3 inches. If an image is 17 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 determine the proportional width of the image on the tablet, we can use the ratio of the diagonals of the computer monitor and the tablet.
Diagonal ratio = (Diagonal of computer monitor) / (Diagonal of tablet)
Diagonal ratio = 21 / 9.3
Diagonal ratio ≈ 2.2581
Now, we can use this ratio to find the width of the image on the tablet.
Width on tablet = (Width on computer) / Diagonal ratio
Width on tablet = 17 / 2.2581
Width on tablet ≈ 7.52 centimeters
Therefore, the width of the image on Delisa's tablet should be approximately 7.52 centimeters.