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Finding the Fourth Proportional to 5,318.52, 7,340 and 3,081

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Solution

The fourth proportional to 5,318.52, 7,340 and 3,081 is: 4,252.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.52 : 7,340 = 3,081 : x
  2. Step 2: Convert to fraction form
    5,318.52/7,340 = 3,081/x
  3. Step 3: Cross multiply
    5,318.52x = 7,340 × 3,081
  4. Step 4: Simplify right side
    5,318.52x = 22,614,540
  5. Step 5: Solve for x
    x = 22,614,540/5,318.52
  6. Step 6: Final answer
    x = 4,252.04

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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.