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Finding the Fourth Proportional to 5,291.32, 7,934.54 and 2,517.88

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Solution

The fourth proportional to 5,291.32, 7,934.54 and 2,517.88 is: 3,775.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,291.32 : 7,934.54 = 2,517.88 : x
  2. Step 2: Convert to fraction form
    5,291.32/7,934.54 = 2,517.88/x
  3. Step 3: Cross multiply
    5,291.32x = 7,934.54 × 2,517.88
  4. Step 4: Simplify right side
    5,291.32x = 19,978,219.58
  5. Step 5: Solve for x
    x = 19,978,219.58/5,291.32
  6. Step 6: Final answer
    x = 3,775.66

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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.