Home / 8,120.97-12,179.30-3,740.49

Finding the Fourth Proportional to 8,120.97, 12,179.30 and 3,740.49

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Solution

The fourth proportional to 8,120.97, 12,179.30 and 3,740.49 is: 5,609.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.97 : 12,179.30 = 3,740.49 : x
  2. Step 2: Convert to fraction form
    8,120.97/12,179.30 = 3,740.49/x
  3. Step 3: Cross multiply
    8,120.97x = 12,179.30 × 3,740.49
  4. Step 4: Simplify right side
    8,120.97x = 45,556,531.15
  5. Step 5: Solve for x
    x = 45,556,531.15/8,120.97
  6. Step 6: Final answer
    x = 5,609.74

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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.