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Finding the Fourth Proportional to 3,761.28, 5,192 and 3,367.60

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Solution

The fourth proportional to 3,761.28, 5,192 and 3,367.60 is: 4,648.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,761.28 : 5,192 = 3,367.60 : x
  2. Step 2: Convert to fraction form
    3,761.28/5,192 = 3,367.60/x
  3. Step 3: Cross multiply
    3,761.28x = 5,192 × 3,367.60
  4. Step 4: Simplify right side
    3,761.28x = 17,484,579.20
  5. Step 5: Solve for x
    x = 17,484,579.20/3,761.28
  6. Step 6: Final answer
    x = 4,648.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.