Question

Find the fourth proportion of 1/3, 2/5, and 8.4

Answer 1

Let,
The fourth proportion be X

•°• 1/3 : 2/5 = 8.4 : X
=> 1/3 / 2/5 = 8.4/X
=> 1/3 × 5/2 = 8.4/X
=> 5/6 = 8.4/X
=> 5X = 6 × 8.4
=> 5X = 50.4
=> X = 50.4/5
=> X = 10.08

So,the fourth proportion of 1/3 , 2/5 and 8.4 is 10.08

Answer 2

Answer:

Find the fourth proportion of 1/3, 2/5, and 8.4