Home / 8,286.94-12,428.61-2,738.97

Finding the Fourth Proportional to 8,286.94, 12,428.61 and 2,738.97

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Solution

The fourth proportional to 8,286.94, 12,428.61 and 2,738.97 is: 4,107.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,286.94 : 12,428.61 = 2,738.97 : x
  2. Step 2: Convert to fraction form
    8,286.94/12,428.61 = 2,738.97/x
  3. Step 3: Cross multiply
    8,286.94x = 12,428.61 × 2,738.97
  4. Step 4: Simplify right side
    8,286.94x = 34,041,589.93
  5. Step 5: Solve for x
    x = 34,041,589.93/8,286.94
  6. Step 6: Final answer
    x = 4,107.86

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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.