Home / 8,081.32-12,121.98-4,456.36

Finding the Fourth Proportional to 8,081.32, 12,121.98 and 4,456.36

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Solution

The fourth proportional to 8,081.32, 12,121.98 and 4,456.36 is: 6,684.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,081.32 : 12,121.98 = 4,456.36 : x
  2. Step 2: Convert to fraction form
    8,081.32/12,121.98 = 4,456.36/x
  3. Step 3: Cross multiply
    8,081.32x = 12,121.98 × 4,456.36
  4. Step 4: Simplify right side
    8,081.32x = 54,019,906.79
  5. Step 5: Solve for x
    x = 54,019,906.79/8,081.32
  6. Step 6: Final answer
    x = 6,684.54

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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.