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Finding the Third Proportional to 3,861 and 9,107

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Solution

The third proportional to 3,861 and 9,107 is: 21,480.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861 : 9,107 = 9,107 : x
  2. Step 2: Convert to fraction form
    3,861/9,107 = 9,107/x
  3. Step 3: Cross multiply
    3,861x = 9,107 × 9,107
  4. Step 4: Simplify right side
    3,861x = 82,937,449
  5. Step 5: Solve for x
    x = 82,937,449/3,861
  6. Step 6: Final answer
    x = 21,480.82

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.