Home / 8,318.52-12,474.14-3,120.75

Finding the Fourth Proportional to 8,318.52, 12,474.14 and 3,120.75

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Solution

The fourth proportional to 8,318.52, 12,474.14 and 3,120.75 is: 4,679.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318.52 : 12,474.14 = 3,120.75 : x
  2. Step 2: Convert to fraction form
    8,318.52/12,474.14 = 3,120.75/x
  3. Step 3: Cross multiply
    8,318.52x = 12,474.14 × 3,120.75
  4. Step 4: Simplify right side
    8,318.52x = 38,928,656.80
  5. Step 5: Solve for x
    x = 38,928,656.80/8,318.52
  6. Step 6: Final answer
    x = 4,679.76

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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.