Question

If 1:2 = 2:x then x is equal to what. Pls answer i need help. Dont spam if smap and think that you will get free points no i will report you and you will not be given the points.
Answer if you know

Answer 1

Answer:

2x−2x−1=4

2x−2x2−1=4

2x(1−21)=2x−1=4=22

∴ x−1=2

from this we get   x=3

xx=33=27

Answer 2

Answer:

1:2 = 2:x

$\frac{1}{2} = \frac{2}{x}$

$1 \times x = 2 \times 2$

$x = 4$

So value of x is 4