Finding the Third Proportional to 432 and 1,080
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Solution
The third proportional to 432 and 1,080 is: 2,700
Step by Step Solution
- Step 1: Write the proportion equation
432 : 1,080 = 1,080 : x - Step 2: Convert to fraction form
432/1,080 = 1,080/x - Step 3: Cross multiply
432x = 1,080 × 1,080 - Step 4: Simplify right side
432x = 1,166,400 - Step 5: Solve for x
x = 1,166,400/432 - Step 6: Final answer
x = 2,700
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These problems maintain the same ratio (2.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.