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Finding the Fourth Proportional to 5,344.88, 7,375.68 and 2,987

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Solution

The fourth proportional to 5,344.88, 7,375.68 and 2,987 is: 4,121.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,344.88 : 7,375.68 = 2,987 : x
  2. Step 2: Convert to fraction form
    5,344.88/7,375.68 = 2,987/x
  3. Step 3: Cross multiply
    5,344.88x = 7,375.68 × 2,987
  4. Step 4: Simplify right side
    5,344.88x = 22,031,156.16
  5. Step 5: Solve for x
    x = 22,031,156.16/5,344.88
  6. Step 6: Final answer
    x = 4,121.92

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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.