4:x=2:15решить соотношение пропорции

To solve the proportion 4:x = 2:15, we will use the concept of cross-multiplication.

Cross-multiplying means multiplying the numerator of the first fraction with the denominator of the second fraction and vice versa.

In this case, we have:

4 * 15 = 2 * x

Multiplying:

60 = 2 * x

To isolate x, divide both sides of the equation by 2:

60/2 = x

30 = x

So, the value of x is 30.