Home / 8,183.38-12,278.72-4,286.88

Finding the Fourth Proportional to 8,183.38, 12,278.72 and 4,286.88

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Solution

The fourth proportional to 8,183.38, 12,278.72 and 4,286.88 is: 6,432.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,183.38 : 12,278.72 = 4,286.88 : x
  2. Step 2: Convert to fraction form
    8,183.38/12,278.72 = 4,286.88/x
  3. Step 3: Cross multiply
    8,183.38x = 12,278.72 × 4,286.88
  4. Step 4: Simplify right side
    8,183.38x = 52,637,399.19
  5. Step 5: Solve for x
    x = 52,637,399.19/8,183.38
  6. Step 6: Final answer
    x = 6,432.23

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1.5x scale

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.