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Finding the Third Proportional to 3,882.38 and 8,412.75

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Solution

The third proportional to 3,882.38 and 8,412.75 is: 18,229.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,882.38 : 8,412.75 = 8,412.75 : x
  2. Step 2: Convert to fraction form
    3,882.38/8,412.75 = 8,412.75/x
  3. Step 3: Cross multiply
    3,882.38x = 8,412.75 × 8,412.75
  4. Step 4: Simplify right side
    3,882.38x = 70,774,362.56
  5. Step 5: Solve for x
    x = 70,774,362.56/3,882.38
  6. Step 6: Final answer
    x = 18,229.66

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.