Home / 8,120.47-12,179.32-2,275.73

Finding the Fourth Proportional to 8,120.47, 12,179.32 and 2,275.73

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Solution

The fourth proportional to 8,120.47, 12,179.32 and 2,275.73 is: 3,413.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.47 : 12,179.32 = 2,275.73 : x
  2. Step 2: Convert to fraction form
    8,120.47/12,179.32 = 2,275.73/x
  3. Step 3: Cross multiply
    8,120.47x = 12,179.32 × 2,275.73
  4. Step 4: Simplify right side
    8,120.47x = 27,716,843.90
  5. Step 5: Solve for x
    x = 27,716,843.90/8,120.47
  6. Step 6: Final answer
    x = 3,413.21

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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.