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Finding the Fourth Proportional to 5,227.28, 7,839.48 and 3,754.16

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Solution

The fourth proportional to 5,227.28, 7,839.48 and 3,754.16 is: 5,630.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,227.28 : 7,839.48 = 3,754.16 : x
  2. Step 2: Convert to fraction form
    5,227.28/7,839.48 = 3,754.16/x
  3. Step 3: Cross multiply
    5,227.28x = 7,839.48 × 3,754.16
  4. Step 4: Simplify right side
    5,227.28x = 29,430,662.24
  5. Step 5: Solve for x
    x = 29,430,662.24/5,227.28
  6. Step 6: Final answer
    x = 5,630.21

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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.