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Finding the Third Proportional to 1,531.69 and 2,517.75

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Solution

The third proportional to 1,531.69 and 2,517.75 is: 4,138.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.69 : 2,517.75 = 2,517.75 : x
  2. Step 2: Convert to fraction form
    1,531.69/2,517.75 = 2,517.75/x
  3. Step 3: Cross multiply
    1,531.69x = 2,517.75 × 2,517.75
  4. Step 4: Simplify right side
    1,531.69x = 6,339,065.06
  5. Step 5: Solve for x
    x = 6,339,065.06/1,531.69
  6. Step 6: Final answer
    x = 4,138.62

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Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.