Question

Calcule a quarta proporcional de
1/2=7/x


2/4=3/x

Answer 1

Resposta:

a)

1 7

— = —

2 X

1 . X = 7 . 2

X = 14

b)

2 3

— = —

4 X

2 . X = 3 . 4

2X = 12

X = 12 : 2

X = 6