Home / 8,119.92-12,179.19-2,572.46

Finding the Fourth Proportional to 8,119.92, 12,179.19 and 2,572.46

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Solution

The fourth proportional to 8,119.92, 12,179.19 and 2,572.46 is: 3,858.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.92 : 12,179.19 = 2,572.46 : x
  2. Step 2: Convert to fraction form
    8,119.92/12,179.19 = 2,572.46/x
  3. Step 3: Cross multiply
    8,119.92x = 12,179.19 × 2,572.46
  4. Step 4: Simplify right side
    8,119.92x = 31,330,418.21
  5. Step 5: Solve for x
    x = 31,330,418.21/8,119.92
  6. Step 6: Final answer
    x = 3,858.46

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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.