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Finding the Third Proportional to 3,169.13 and 3,987.56

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Solution

The third proportional to 3,169.13 and 3,987.56 is: 5,017.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,169.13 : 3,987.56 = 3,987.56 : x
  2. Step 2: Convert to fraction form
    3,169.13/3,987.56 = 3,987.56/x
  3. Step 3: Cross multiply
    3,169.13x = 3,987.56 × 3,987.56
  4. Step 4: Simplify right side
    3,169.13x = 15,900,654.69
  5. Step 5: Solve for x
    x = 15,900,654.69/3,169.13
  6. Step 6: Final answer
    x = 5,017.36

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Why These Related Problems?

These problems maintain the same ratio (1.26) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.