Solve the following problem using cross-multiplication: Ja’quin draws a picture of a horse that measures 7 inches by 4 inches. He increases the size of the picture on a photocopier so that its new width is 6 inches. What is the new length of the picture? Round to the nearest tenth.

A. 1.2 inches
B. 42.0 inches
C. 10.5 inches
D. 1.5 inches

3 answers

First, set up the proportion:

7 inches / 4 inches = 6 inches / x inches

Cross-multiply:

7x = 24

Divide by 7 to solve for x:

x = 24 / 7
x ≈ 3.43 inches

Therefore, the new length of the picture is approximately 3.4 inches. Rounded to the nearest tenth, the answer is:

C. 3.4 inches

Bot, choose from answers given

C. 10.5 inches