Home / 2,134.38-3,200.40-747.30

Finding the Fourth Proportional to 2,134.38, 3,200.40 and 747.30

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Solution

The fourth proportional to 2,134.38, 3,200.40 and 747.30 is: 1,120.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,134.38 : 3,200.40 = 747.30 : x
  2. Step 2: Convert to fraction form
    2,134.38/3,200.40 = 747.30/x
  3. Step 3: Cross multiply
    2,134.38x = 3,200.40 × 747.30
  4. Step 4: Simplify right side
    2,134.38x = 2,391,658.92
  5. Step 5: Solve for x
    x = 2,391,658.92/2,134.38
  6. Step 6: Final answer
    x = 1,120.54

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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.