Home / 8,129.28-12,179.90-5,490.96

Finding the Fourth Proportional to 8,129.28, 12,179.90 and 5,490.96

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Solution

The fourth proportional to 8,129.28, 12,179.90 and 5,490.96 is: 8,226.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129.28 : 12,179.90 = 5,490.96 : x
  2. Step 2: Convert to fraction form
    8,129.28/12,179.90 = 5,490.96/x
  3. Step 3: Cross multiply
    8,129.28x = 12,179.90 × 5,490.96
  4. Step 4: Simplify right side
    8,129.28x = 66,879,343.70
  5. Step 5: Solve for x
    x = 66,879,343.70/8,129.28
  6. Step 6: Final answer
    x = 8,226.97

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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.