Home / 5,591.31-8,387.25-1,431.36

Finding the Fourth Proportional to 5,591.31, 8,387.25 and 1,431.36

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Solution

The fourth proportional to 5,591.31, 8,387.25 and 1,431.36 is: 2,147.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,591.31 : 8,387.25 = 1,431.36 : x
  2. Step 2: Convert to fraction form
    5,591.31/8,387.25 = 1,431.36/x
  3. Step 3: Cross multiply
    5,591.31x = 8,387.25 × 1,431.36
  4. Step 4: Simplify right side
    5,591.31x = 12,005,174.16
  5. Step 5: Solve for x
    x = 12,005,174.16/5,591.31
  6. Step 6: Final answer
    x = 2,147.11

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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.