Home / 8,077.20-12,115.80-3,904.52

Finding the Fourth Proportional to 8,077.20, 12,115.80 and 3,904.52

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Solution

The fourth proportional to 8,077.20, 12,115.80 and 3,904.52 is: 5,856.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,077.20 : 12,115.80 = 3,904.52 : x
  2. Step 2: Convert to fraction form
    8,077.20/12,115.80 = 3,904.52/x
  3. Step 3: Cross multiply
    8,077.20x = 12,115.80 × 3,904.52
  4. Step 4: Simplify right side
    8,077.20x = 47,306,383.42
  5. Step 5: Solve for x
    x = 47,306,383.42/8,077.20
  6. Step 6: Final answer
    x = 5,856.78

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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.