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Finding the Fourth Proportional to 2,092.44, 3,138.57 and 631.55

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Solution

The fourth proportional to 2,092.44, 3,138.57 and 631.55 is: 947.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,092.44 : 3,138.57 = 631.55 : x
  2. Step 2: Convert to fraction form
    2,092.44/3,138.57 = 631.55/x
  3. Step 3: Cross multiply
    2,092.44x = 3,138.57 × 631.55
  4. Step 4: Simplify right side
    2,092.44x = 1,982,152.30
  5. Step 5: Solve for x
    x = 1,982,152.30/2,092.44
  6. Step 6: Final answer
    x = 947.29

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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.