To determine if these statements are proportions, we need to check if the ratios on both sides of the equations are equal.
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Check \( \frac{2.5}{10} \) and \( \frac{12}{48} \): \[ \frac{2.5}{10} = 0.25 \] \[ \frac{12}{48} = 0.25 \] Since \( 0.25 = 0.25 \), the first statement \( 2.510 = 1248 \) is indeed a proportion.
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Check \( \frac{2.52}{12} \) and \( \frac{24}{24} \): \[ \frac{2.52}{12} = 0.21 \] \[ \frac{12}{24} = 0.5 \] Since \( 0.21 \neq 0.5 \), the second statement \( 2.52 = 1224 \) is not a proportion.
Therefore, the correct answer is:
Only the first statement is a proportion.