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Finding the Third Proportional to 9,129 and 10,344

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Solution

The third proportional to 9,129 and 10,344 is: 11,720.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,129 : 10,344 = 10,344 : x
  2. Step 2: Convert to fraction form
    9,129/10,344 = 10,344/x
  3. Step 3: Cross multiply
    9,129x = 10,344 × 10,344
  4. Step 4: Simplify right side
    9,129x = 106,998,336
  5. Step 5: Solve for x
    x = 106,998,336/9,129
  6. Step 6: Final answer
    x = 11,720.71

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Why These Related Problems?

These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.