Home / 8,119.40-12,180.32-2,924.88

Finding the Fourth Proportional to 8,119.40, 12,180.32 and 2,924.88

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Solution

The fourth proportional to 8,119.40, 12,180.32 and 2,924.88 is: 4,387.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.40 : 12,180.32 = 2,924.88 : x
  2. Step 2: Convert to fraction form
    8,119.40/12,180.32 = 2,924.88/x
  3. Step 3: Cross multiply
    8,119.40x = 12,180.32 × 2,924.88
  4. Step 4: Simplify right side
    8,119.40x = 35,625,974.36
  5. Step 5: Solve for x
    x = 35,625,974.36/8,119.40
  6. Step 6: Final answer
    x = 4,387.76

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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.