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Finding the Fourth Proportional to 2,031.60, 3,048.60 and 732.90

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Solution

The fourth proportional to 2,031.60, 3,048.60 and 732.90 is: 1,099.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,031.60 : 3,048.60 = 732.90 : x
  2. Step 2: Convert to fraction form
    2,031.60/3,048.60 = 732.90/x
  3. Step 3: Cross multiply
    2,031.60x = 3,048.60 × 732.90
  4. Step 4: Simplify right side
    2,031.60x = 2,234,318.94
  5. Step 5: Solve for x
    x = 2,234,318.94/2,031.60
  6. Step 6: Final answer
    x = 1,099.78

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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.