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Finding the Fourth Proportional to 7,919.44, 11,879.97 and 2,725.31

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Solution

The fourth proportional to 7,919.44, 11,879.97 and 2,725.31 is: 4,088.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,919.44 : 11,879.97 = 2,725.31 : x
  2. Step 2: Convert to fraction form
    7,919.44/11,879.97 = 2,725.31/x
  3. Step 3: Cross multiply
    7,919.44x = 11,879.97 × 2,725.31
  4. Step 4: Simplify right side
    7,919.44x = 32,376,620.52
  5. Step 5: Solve for x
    x = 32,376,620.52/7,919.44
  6. Step 6: Final answer
    x = 4,088.25

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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.