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Finding the Third Proportional to 3,908 and 9,239

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Solution

The third proportional to 3,908 and 9,239 is: 21,842.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908 : 9,239 = 9,239 : x
  2. Step 2: Convert to fraction form
    3,908/9,239 = 9,239/x
  3. Step 3: Cross multiply
    3,908x = 9,239 × 9,239
  4. Step 4: Simplify right side
    3,908x = 85,359,121
  5. Step 5: Solve for x
    x = 85,359,121/3,908
  6. Step 6: Final answer
    x = 21,842.15

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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.