Home / 2,719.52-4,079.28-667.52

Finding the Fourth Proportional to 2,719.52, 4,079.28 and 667.52

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Solution

The fourth proportional to 2,719.52, 4,079.28 and 667.52 is: 1,001.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,719.52 : 4,079.28 = 667.52 : x
  2. Step 2: Convert to fraction form
    2,719.52/4,079.28 = 667.52/x
  3. Step 3: Cross multiply
    2,719.52x = 4,079.28 × 667.52
  4. Step 4: Simplify right side
    2,719.52x = 2,723,000.99
  5. Step 5: Solve for x
    x = 2,723,000.99/2,719.52
  6. Step 6: Final answer
    x = 1,001.28

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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.