4,5 : 0,6= x: 2,4

To solve the proportion \( 4.5 : 0.6 = x : 2.4 \), you can set it up as a fraction:

\[ \frac{4.5}{0.6} = \frac{x}{2.4} \]

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

\[ 4.5 \cdot 2.4 = 0.6 \cdot x \]

Calculating \( 4.5 \cdot 2.4 \):

\[ 4.5 \cdot 2.4 = 10.8 \]

Now the equation becomes:

\[ 10.8 = 0.6x \]

Now, solve for \( x \) by dividing both sides by 0.6:

\[ x = \frac{10.8}{0.6} \]

Calculating \( \frac{10.8}{0.6} \):

\[ x = 18 \]

So, the value of \( x \) is \( 18 \).