Home / 3,178.91-4,382.27-2,231.85

Finding the Fourth Proportional to 3,178.91, 4,382.27 and 2,231.85

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Solution

The fourth proportional to 3,178.91, 4,382.27 and 2,231.85 is: 3,076.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.91 : 4,382.27 = 2,231.85 : x
  2. Step 2: Convert to fraction form
    3,178.91/4,382.27 = 2,231.85/x
  3. Step 3: Cross multiply
    3,178.91x = 4,382.27 × 2,231.85
  4. Step 4: Simplify right side
    3,178.91x = 9,780,582.94
  5. Step 5: Solve for x
    x = 9,780,582.94/3,178.91
  6. Step 6: Final answer
    x = 3,076.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.