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Finding the Third Proportional to 7,938 and 17,469

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Solution

The third proportional to 7,938 and 17,469 is: 38,443.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,938 : 17,469 = 17,469 : x
  2. Step 2: Convert to fraction form
    7,938/17,469 = 17,469/x
  3. Step 3: Cross multiply
    7,938x = 17,469 × 17,469
  4. Step 4: Simplify right side
    7,938x = 305,165,961
  5. Step 5: Solve for x
    x = 305,165,961/7,938
  6. Step 6: Final answer
    x = 38,443.68

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.