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Finding the Fourth Proportional to 3,772.70, 5,660.76 and 1,581.92

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Solution

The fourth proportional to 3,772.70, 5,660.76 and 1,581.92 is: 2,373.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,772.70 : 5,660.76 = 1,581.92 : x
  2. Step 2: Convert to fraction form
    3,772.70/5,660.76 = 1,581.92/x
  3. Step 3: Cross multiply
    3,772.70x = 5,660.76 × 1,581.92
  4. Step 4: Simplify right side
    3,772.70x = 8,954,869.46
  5. Step 5: Solve for x
    x = 8,954,869.46/3,772.70
  6. Step 6: Final answer
    x = 2,373.60

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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.