Home / 5,481.32-8,221.91-2,195.15

Finding the Fourth Proportional to 5,481.32, 8,221.91 and 2,195.15

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Solution

The fourth proportional to 5,481.32, 8,221.91 and 2,195.15 is: 3,292.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,481.32 : 8,221.91 = 2,195.15 : x
  2. Step 2: Convert to fraction form
    5,481.32/8,221.91 = 2,195.15/x
  3. Step 3: Cross multiply
    5,481.32x = 8,221.91 × 2,195.15
  4. Step 4: Simplify right side
    5,481.32x = 18,048,273.65
  5. Step 5: Solve for x
    x = 18,048,273.65/5,481.32
  6. Step 6: Final answer
    x = 3,292.69

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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.