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Finding the Fourth Proportional to 3,985.90, 5,972.52 and 3,366.70

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Solution

The fourth proportional to 3,985.90, 5,972.52 and 3,366.70 is: 5,044.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.90 : 5,972.52 = 3,366.70 : x
  2. Step 2: Convert to fraction form
    3,985.90/5,972.52 = 3,366.70/x
  3. Step 3: Cross multiply
    3,985.90x = 5,972.52 × 3,366.70
  4. Step 4: Simplify right side
    3,985.90x = 20,107,683.08
  5. Step 5: Solve for x
    x = 20,107,683.08/3,985.90
  6. Step 6: Final answer
    x = 5,044.70

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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.