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Finding the Fourth Proportional to 5,168.82, 7,747.02 and 2,391.72

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Solution

The fourth proportional to 5,168.82, 7,747.02 and 2,391.72 is: 3,584.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,168.82 : 7,747.02 = 2,391.72 : x
  2. Step 2: Convert to fraction form
    5,168.82/7,747.02 = 2,391.72/x
  3. Step 3: Cross multiply
    5,168.82x = 7,747.02 × 2,391.72
  4. Step 4: Simplify right side
    5,168.82x = 18,528,702.67
  5. Step 5: Solve for x
    x = 18,528,702.67/5,168.82
  6. Step 6: Final answer
    x = 3,584.71

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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.