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Finding the Third Proportional to 5,487.50 and 8,279

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Solution

The third proportional to 5,487.50 and 8,279 is: 12,490.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,487.50 : 8,279 = 8,279 : x
  2. Step 2: Convert to fraction form
    5,487.50/8,279 = 8,279/x
  3. Step 3: Cross multiply
    5,487.50x = 8,279 × 8,279
  4. Step 4: Simplify right side
    5,487.50x = 68,541,841
  5. Step 5: Solve for x
    x = 68,541,841/5,487.50
  6. Step 6: Final answer
    x = 12,490.54

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.