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Finding the Third Proportional to 7,978 and 16,352

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Solution

The third proportional to 7,978 and 16,352 is: 33,515.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,978 : 16,352 = 16,352 : x
  2. Step 2: Convert to fraction form
    7,978/16,352 = 16,352/x
  3. Step 3: Cross multiply
    7,978x = 16,352 × 16,352
  4. Step 4: Simplify right side
    7,978x = 267,387,904
  5. Step 5: Solve for x
    x = 267,387,904/7,978
  6. Step 6: Final answer
    x = 33,515.66

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.