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Finding the Third Proportional to 3,986 and 8,452

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Solution

The third proportional to 3,986 and 8,452 is: 17,921.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986 : 8,452 = 8,452 : x
  2. Step 2: Convert to fraction form
    3,986/8,452 = 8,452/x
  3. Step 3: Cross multiply
    3,986x = 8,452 × 8,452
  4. Step 4: Simplify right side
    3,986x = 71,436,304
  5. Step 5: Solve for x
    x = 71,436,304/3,986
  6. Step 6: Final answer
    x = 17,921.80

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.