Home / 8,119.49-12,179.84-2,275.88

Finding the Fourth Proportional to 8,119.49, 12,179.84 and 2,275.88

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Solution

The fourth proportional to 8,119.49, 12,179.84 and 2,275.88 is: 3,413.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.49 : 12,179.84 = 2,275.88 : x
  2. Step 2: Convert to fraction form
    8,119.49/12,179.84 = 2,275.88/x
  3. Step 3: Cross multiply
    8,119.49x = 12,179.84 × 2,275.88
  4. Step 4: Simplify right side
    8,119.49x = 27,719,781.98
  5. Step 5: Solve for x
    x = 27,719,781.98/8,119.49
  6. Step 6: Final answer
    x = 3,413.98

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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.