Question

Find the Third proprotional of 2.1 and 4.2​

Answer 1

Step-by-step explanation:

let the third proportional be x

$= \frac{2.1}{4.2} = \frac{4.2}{x}$

$by \: crass \: multiplication$

$= (2.1 \times x) = (4.2 \times 4.2)$

$=2.1 x = 17.64$

$= x = \frac{17.64}{2.1}$

$= x = 8.4$