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Finding the Third Proportional to 3,992 and 6,414

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Solution

The third proportional to 3,992 and 6,414 is: 10,305.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992 : 6,414 = 6,414 : x
  2. Step 2: Convert to fraction form
    3,992/6,414 = 6,414/x
  3. Step 3: Cross multiply
    3,992x = 6,414 × 6,414
  4. Step 4: Simplify right side
    3,992x = 41,139,396
  5. Step 5: Solve for x
    x = 41,139,396/3,992
  6. Step 6: Final answer
    x = 10,305.46

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.