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Finding the Fourth Proportional to 11,879.08, 17,821.08 and 3,558.76

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Solution

The fourth proportional to 11,879.08, 17,821.08 and 3,558.76 is: 5,338.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,879.08 : 17,821.08 = 3,558.76 : x
  2. Step 2: Convert to fraction form
    11,879.08/17,821.08 = 3,558.76/x
  3. Step 3: Cross multiply
    11,879.08x = 17,821.08 × 3,558.76
  4. Step 4: Simplify right side
    11,879.08x = 63,420,946.66
  5. Step 5: Solve for x
    x = 63,420,946.66/11,879.08
  6. Step 6: Final answer
    x = 5,338.88

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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.