Home / 3,747.92-5,620.76-1,281.36

Finding the Fourth Proportional to 3,747.92, 5,620.76 and 1,281.36

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Solution

The fourth proportional to 3,747.92, 5,620.76 and 1,281.36 is: 1,921.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,747.92 : 5,620.76 = 1,281.36 : x
  2. Step 2: Convert to fraction form
    3,747.92/5,620.76 = 1,281.36/x
  3. Step 3: Cross multiply
    3,747.92x = 5,620.76 × 1,281.36
  4. Step 4: Simplify right side
    3,747.92x = 7,202,217.03
  5. Step 5: Solve for x
    x = 7,202,217.03/3,747.92
  6. Step 6: Final answer
    x = 1,921.66

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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.