Home / 7,951.28-11,927.13-2,107.88

Finding the Fourth Proportional to 7,951.28, 11,927.13 and 2,107.88

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Solution

The fourth proportional to 7,951.28, 11,927.13 and 2,107.88 is: 3,161.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,951.28 : 11,927.13 = 2,107.88 : x
  2. Step 2: Convert to fraction form
    7,951.28/11,927.13 = 2,107.88/x
  3. Step 3: Cross multiply
    7,951.28x = 11,927.13 × 2,107.88
  4. Step 4: Simplify right side
    7,951.28x = 25,140,899.15
  5. Step 5: Solve for x
    x = 25,140,899.15/7,951.28
  6. Step 6: Final answer
    x = 3,161.87

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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.