3/5 = ?/25

1 answer

To solve for the unknown value in the proportion \(\frac{3}{5} = \frac{?}{25}\), you can set up an equation and solve it.

Let's denote the unknown value by \(x\). Then, you have:

\[
\frac{3}{5} = \frac{x}{25}
\]

To find \(x\), you can cross-multiply:

\[
3 \times 25 = 5 \times x
\]

which simplifies to:

\[
75 = 5x
\]

Now, solve for \(x\) by dividing both sides of the equation by 5:

\[
x = \frac{75}{5} = 15
\]

So, the unknown value is \(x = 15\).

Hence,

\[
\frac{3}{5} = \frac{15}{25}
\]