Home / 11,879.28-17,819.06-3,115.08

Finding the Fourth Proportional to 11,879.28, 17,819.06 and 3,115.08

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Solution

The fourth proportional to 11,879.28, 17,819.06 and 3,115.08 is: 4,672.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,879.28 : 17,819.06 = 3,115.08 : x
  2. Step 2: Convert to fraction form
    11,879.28/17,819.06 = 3,115.08/x
  3. Step 3: Cross multiply
    11,879.28x = 17,819.06 × 3,115.08
  4. Step 4: Simplify right side
    11,879.28x = 55,507,781.85
  5. Step 5: Solve for x
    x = 55,507,781.85/11,879.28
  6. Step 6: Final answer
    x = 4,672.66

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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.