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Finding the Third Proportional to 5,327.38 and 7,991.13

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Solution

The third proportional to 5,327.38 and 7,991.13 is: 11,986.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,327.38 : 7,991.13 = 7,991.13 : x
  2. Step 2: Convert to fraction form
    5,327.38/7,991.13 = 7,991.13/x
  3. Step 3: Cross multiply
    5,327.38x = 7,991.13 × 7,991.13
  4. Step 4: Simplify right side
    5,327.38x = 63,858,078.77
  5. Step 5: Solve for x
    x = 63,858,078.77/5,327.38
  6. Step 6: Final answer
    x = 11,986.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.