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Finding the Fourth Proportional to 3,761.28, 5,671.68 and 3,665.28

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Solution

The fourth proportional to 3,761.28, 5,671.68 and 3,665.28 is: 5,526.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,761.28 : 5,671.68 = 3,665.28 : x
  2. Step 2: Convert to fraction form
    3,761.28/5,671.68 = 3,665.28/x
  3. Step 3: Cross multiply
    3,761.28x = 5,671.68 × 3,665.28
  4. Step 4: Simplify right side
    3,761.28x = 20,788,295.27
  5. Step 5: Solve for x
    x = 20,788,295.27/3,761.28
  6. Step 6: Final answer
    x = 5,526.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.