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Finding the Fourth Proportional to 3,988.85, 5,982.82 and 1,067.39

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Solution

The fourth proportional to 3,988.85, 5,982.82 and 1,067.39 is: 1,600.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.85 : 5,982.82 = 1,067.39 : x
  2. Step 2: Convert to fraction form
    3,988.85/5,982.82 = 1,067.39/x
  3. Step 3: Cross multiply
    3,988.85x = 5,982.82 × 1,067.39
  4. Step 4: Simplify right side
    3,988.85x = 6,386,002.24
  5. Step 5: Solve for x
    x = 6,386,002.24/3,988.85
  6. Step 6: Final answer
    x = 1,600.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.