Home / 8,120.91-12,179.99-2,276.18

Finding the Fourth Proportional to 8,120.91, 12,179.99 and 2,276.18

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Solution

The fourth proportional to 8,120.91, 12,179.99 and 2,276.18 is: 3,413.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.91 : 12,179.99 = 2,276.18 : x
  2. Step 2: Convert to fraction form
    8,120.91/12,179.99 = 2,276.18/x
  3. Step 3: Cross multiply
    8,120.91x = 12,179.99 × 2,276.18
  4. Step 4: Simplify right side
    8,120.91x = 27,723,777.36
  5. Step 5: Solve for x
    x = 27,723,777.36/8,120.91
  6. Step 6: Final answer
    x = 3,413.88

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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.