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Finding the Fourth Proportional to 5,686.80, 8,531.37 and 2,399.88

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Solution

The fourth proportional to 5,686.80, 8,531.37 and 2,399.88 is: 3,600.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,686.80 : 8,531.37 = 2,399.88 : x
  2. Step 2: Convert to fraction form
    5,686.80/8,531.37 = 2,399.88/x
  3. Step 3: Cross multiply
    5,686.80x = 8,531.37 × 2,399.88
  4. Step 4: Simplify right side
    5,686.80x = 20,474,264.24
  5. Step 5: Solve for x
    x = 20,474,264.24/5,686.80
  6. Step 6: Final answer
    x = 3,600.31

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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.