Home / 8,081.10-12,121.65-5,456.70

Finding the Fourth Proportional to 8,081.10, 12,121.65 and 5,456.70

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Solution

The fourth proportional to 8,081.10, 12,121.65 and 5,456.70 is: 8,185.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,081.10 : 12,121.65 = 5,456.70 : x
  2. Step 2: Convert to fraction form
    8,081.10/12,121.65 = 5,456.70/x
  3. Step 3: Cross multiply
    8,081.10x = 12,121.65 × 5,456.70
  4. Step 4: Simplify right side
    8,081.10x = 66,144,207.56
  5. Step 5: Solve for x
    x = 66,144,207.56/8,081.10
  6. Step 6: Final answer
    x = 8,185.05

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Similar ratio
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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.