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Finding the Third Proportional to 3,860 and 5,493

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Solution

The third proportional to 3,860 and 5,493 is: 7,816.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860 : 5,493 = 5,493 : x
  2. Step 2: Convert to fraction form
    3,860/5,493 = 5,493/x
  3. Step 3: Cross multiply
    3,860x = 5,493 × 5,493
  4. Step 4: Simplify right side
    3,860x = 30,173,049
  5. Step 5: Solve for x
    x = 30,173,049/3,860
  6. Step 6: Final answer
    x = 7,816.85

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.