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Finding the Fourth Proportional to 11,279.03, 16,917.32 and 2,959.88

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Solution

The fourth proportional to 11,279.03, 16,917.32 and 2,959.88 is: 4,439.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,279.03 : 16,917.32 = 2,959.88 : x
  2. Step 2: Convert to fraction form
    11,279.03/16,917.32 = 2,959.88/x
  3. Step 3: Cross multiply
    11,279.03x = 16,917.32 × 2,959.88
  4. Step 4: Simplify right side
    11,279.03x = 50,073,159.93
  5. Step 5: Solve for x
    x = 50,073,159.93/11,279.03
  6. Step 6: Final answer
    x = 4,439.49

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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.