Home / 5,481.25-8,221.91-1,377.25

Finding the Fourth Proportional to 5,481.25, 8,221.91 and 1,377.25

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Solution

The fourth proportional to 5,481.25, 8,221.91 and 1,377.25 is: 2,065.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,481.25 : 8,221.91 = 1,377.25 : x
  2. Step 2: Convert to fraction form
    5,481.25/8,221.91 = 1,377.25/x
  3. Step 3: Cross multiply
    5,481.25x = 8,221.91 × 1,377.25
  4. Step 4: Simplify right side
    5,481.25x = 11,323,618.66
  5. Step 5: Solve for x
    x = 11,323,618.66/5,481.25
  6. Step 6: Final answer
    x = 2,065.88

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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.