Question

What is the length of side x? A. 6 B. 8.5 C. 11 D. 11.5

Answer 1

Set up a proportion.

3/6 = 5.5 / x Cross multiply

3x = 6*5.5

3x = 33 Divide by 3

x = 33/3

x = 11

The length of x is 11.

Answer 2

In this problem, you can set it up as a proportion:
3/6 = 5.5/x
Cross multiply:
3x = 33
X = 11