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Finding the Fourth Proportional to 7,919.52, 11,879.37 and 2,076.72

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Solution

The fourth proportional to 7,919.52, 11,879.37 and 2,076.72 is: 3,115.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,919.52 : 11,879.37 = 2,076.72 : x
  2. Step 2: Convert to fraction form
    7,919.52/11,879.37 = 2,076.72/x
  3. Step 3: Cross multiply
    7,919.52x = 11,879.37 × 2,076.72
  4. Step 4: Simplify right side
    7,919.52x = 24,670,125.27
  5. Step 5: Solve for x
    x = 24,670,125.27/7,919.52
  6. Step 6: Final answer
    x = 3,115.10

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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.