Home / 2,711.28-4,067.04-979.44

Finding the Fourth Proportional to 2,711.28, 4,067.04 and 979.44

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Solution

The fourth proportional to 2,711.28, 4,067.04 and 979.44 is: 1,469.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,711.28 : 4,067.04 = 979.44 : x
  2. Step 2: Convert to fraction form
    2,711.28/4,067.04 = 979.44/x
  3. Step 3: Cross multiply
    2,711.28x = 4,067.04 × 979.44
  4. Step 4: Simplify right side
    2,711.28x = 3,983,421.66
  5. Step 5: Solve for x
    x = 3,983,421.66/2,711.28
  6. Step 6: Final answer
    x = 1,469.20

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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.