Home / 2,651.60-3,979.56-2,439.92

Finding the Fourth Proportional to 2,651.60, 3,979.56 and 2,439.92

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Solution

The fourth proportional to 2,651.60, 3,979.56 and 2,439.92 is: 3,661.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,651.60 : 3,979.56 = 2,439.92 : x
  2. Step 2: Convert to fraction form
    2,651.60/3,979.56 = 2,439.92/x
  3. Step 3: Cross multiply
    2,651.60x = 3,979.56 × 2,439.92
  4. Step 4: Simplify right side
    2,651.60x = 9,709,808.04
  5. Step 5: Solve for x
    x = 9,709,808.04/2,651.60
  6. Step 6: Final answer
    x = 3,661.87

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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.