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Finding the Third Proportional to 5,278.50 and 10,449

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Solution

The third proportional to 5,278.50 and 10,449 is: 20,684.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.50 : 10,449 = 10,449 : x
  2. Step 2: Convert to fraction form
    5,278.50/10,449 = 10,449/x
  3. Step 3: Cross multiply
    5,278.50x = 10,449 × 10,449
  4. Step 4: Simplify right side
    5,278.50x = 109,181,601
  5. Step 5: Solve for x
    x = 109,181,601/5,278.50
  6. Step 6: Final answer
    x = 20,684.21

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Why These Related Problems?

These problems maintain the same ratio (1.98) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.