Home / 5,385.84-7,432.56-3,147.90

Finding the Fourth Proportional to 5,385.84, 7,432.56 and 3,147.90

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Solution

The fourth proportional to 5,385.84, 7,432.56 and 3,147.90 is: 4,344.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385.84 : 7,432.56 = 3,147.90 : x
  2. Step 2: Convert to fraction form
    5,385.84/7,432.56 = 3,147.90/x
  3. Step 3: Cross multiply
    5,385.84x = 7,432.56 × 3,147.90
  4. Step 4: Simplify right side
    5,385.84x = 23,396,955.62
  5. Step 5: Solve for x
    x = 23,396,955.62/5,385.84
  6. Step 6: Final answer
    x = 4,344.16

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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.