Home / 7,921.32-11,882.72-2,077.96

Finding the Fourth Proportional to 7,921.32, 11,882.72 and 2,077.96

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Solution

The fourth proportional to 7,921.32, 11,882.72 and 2,077.96 is: 3,117.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.32 : 11,882.72 = 2,077.96 : x
  2. Step 2: Convert to fraction form
    7,921.32/11,882.72 = 2,077.96/x
  3. Step 3: Cross multiply
    7,921.32x = 11,882.72 × 2,077.96
  4. Step 4: Simplify right side
    7,921.32x = 24,691,816.85
  5. Step 5: Solve for x
    x = 24,691,816.85/7,921.32
  6. Step 6: Final answer
    x = 3,117.13

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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.