Home / 3,500.87-5,251.82-1,279.81

Finding the Fourth Proportional to 3,500.87, 5,251.82 and 1,279.81

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Solution

The fourth proportional to 3,500.87, 5,251.82 and 1,279.81 is: 1,919.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,500.87 : 5,251.82 = 1,279.81 : x
  2. Step 2: Convert to fraction form
    3,500.87/5,251.82 = 1,279.81/x
  3. Step 3: Cross multiply
    3,500.87x = 5,251.82 × 1,279.81
  4. Step 4: Simplify right side
    3,500.87x = 6,721,331.75
  5. Step 5: Solve for x
    x = 6,721,331.75/3,500.87
  6. Step 6: Final answer
    x = 1,919.90

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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.