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Finding the Third Proportional to 28,815 and 38,757

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Solution

The third proportional to 28,815 and 38,757 is: 52,129.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,815 : 38,757 = 38,757 : x
  2. Step 2: Convert to fraction form
    28,815/38,757 = 38,757/x
  3. Step 3: Cross multiply
    28,815x = 38,757 × 38,757
  4. Step 4: Simplify right side
    28,815x = 1,502,105,049
  5. Step 5: Solve for x
    x = 1,502,105,049/28,815
  6. Step 6: Final answer
    x = 52,129.27

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.