Question

find the fourth proportions of 8.1,1.2,2.7

Answer 1

product of means = product of extremes

here means = 1.2 and 2.7
let the fourth proportion be x
now extremes = 8.1 and x

A/Q FORMULA

8.1x = 1.2 ×2.7
x = (1.2×2.7)/8.1
x = 3.24 ÷ 8.1
x = 0.4

so the fourth proportion is 0.4

Verification

LHS
8.1x
8.1 × 0.4
3.24

RHS
1.2 × 2.7
3.24

Since, LHS = RHS
HENCE VERIFIED

HOPE IT HELPS...

Answer 2

Step-by-step explanation:

The fourth proportion be x

8.1:1.2::2.7:x

= 8.1/1.2 =2.7/X

= 8.1X =2.7×1.2

=. 8.1X =3.24

= X = 3.24/8.1

= 0.4 Ans

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