Home / 8,119.80-12,180.47-2,276.39

Finding the Fourth Proportional to 8,119.80, 12,180.47 and 2,276.39

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Solution

The fourth proportional to 8,119.80, 12,180.47 and 2,276.39 is: 3,414.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.80 : 12,180.47 = 2,276.39 : x
  2. Step 2: Convert to fraction form
    8,119.80/12,180.47 = 2,276.39/x
  3. Step 3: Cross multiply
    8,119.80x = 12,180.47 × 2,276.39
  4. Step 4: Simplify right side
    8,119.80x = 27,727,427.82
  5. Step 5: Solve for x
    x = 27,727,427.82/8,119.80
  6. Step 6: Final answer
    x = 3,414.79

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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.