Question

Find the fourth proportional of x + 7x, x + 5 and x + 6 if x = 3.

• A. 8
• B. 9
• C. 24
• D. 3

Answer 1

Answer:

D. 3

$x+7x,x+5,x+6$

$x=3$

$3+7\times 3,3+5,3+6$

$24,8,9$

4th proportion

$\frac{8\times 9}{24}=72/24=3$