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Finding the Third Proportional to 3,917 and 5,987

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Solution

The third proportional to 3,917 and 5,987 is: 9,150.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917 : 5,987 = 5,987 : x
  2. Step 2: Convert to fraction form
    3,917/5,987 = 5,987/x
  3. Step 3: Cross multiply
    3,917x = 5,987 × 5,987
  4. Step 4: Simplify right side
    3,917x = 35,844,169
  5. Step 5: Solve for x
    x = 35,844,169/3,917
  6. Step 6: Final answer
    x = 9,150.92

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.