Home / 5,387.31-8,082.18-2,102.56

Finding the Fourth Proportional to 5,387.31, 8,082.18 and 2,102.56

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Solution

The fourth proportional to 5,387.31, 8,082.18 and 2,102.56 is: 3,154.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387.31 : 8,082.18 = 2,102.56 : x
  2. Step 2: Convert to fraction form
    5,387.31/8,082.18 = 2,102.56/x
  3. Step 3: Cross multiply
    5,387.31x = 8,082.18 × 2,102.56
  4. Step 4: Simplify right side
    5,387.31x = 16,993,248.18
  5. Step 5: Solve for x
    x = 16,993,248.18/5,387.31
  6. Step 6: Final answer
    x = 3,154.31

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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.