Home / 2,439.92-3,660.42-979.04

Finding the Fourth Proportional to 2,439.92, 3,660.42 and 979.04

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Solution

The fourth proportional to 2,439.92, 3,660.42 and 979.04 is: 1,468.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,439.92 : 3,660.42 = 979.04 : x
  2. Step 2: Convert to fraction form
    2,439.92/3,660.42 = 979.04/x
  3. Step 3: Cross multiply
    2,439.92x = 3,660.42 × 979.04
  4. Step 4: Simplify right side
    2,439.92x = 3,583,697.60
  5. Step 5: Solve for x
    x = 3,583,697.60/2,439.92
  6. Step 6: Final answer
    x = 1,468.78

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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.