Question

what is the fourth proportion to 1.3, 5.2 and 7.1 ?​

Answer 1

Answer:

1:3::7:21

Step-by-step explanation:

The fourth proportional is 21. 1:3::7:x=1:3::7:21                                                   PREMISES

y=the fourth proportional of the ratios 1:3::7:x

CALCULATIONS

y=the fourth proportional of the ratios 1:3::7:x

1:3::7:x

1/3::7/21

and,

1:3::7:21