Home / 7,787.11-11,680.85-2,789.83

Finding the Fourth Proportional to 7,787.11, 11,680.85 and 2,789.83

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Solution

The fourth proportional to 7,787.11, 11,680.85 and 2,789.83 is: 4,184.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,787.11 : 11,680.85 = 2,789.83 : x
  2. Step 2: Convert to fraction form
    7,787.11/11,680.85 = 2,789.83/x
  3. Step 3: Cross multiply
    7,787.11x = 11,680.85 × 2,789.83
  4. Step 4: Simplify right side
    7,787.11x = 32,587,525.93
  5. Step 5: Solve for x
    x = 32,587,525.93/7,787.11
  6. Step 6: Final answer
    x = 4,184.81

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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.