Question

8.1, 1.2, 2.7 solved as a fourth proportional

Answer 1

Let 4th proportional be x
By condition
8.1÷1.2=2.7÷x
=3÷1.2=1÷x
=1÷0.4=1÷x
=x=0.4

Answer 2

0.4 is a fourth proportional.

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