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Finding the Fourth Proportional to 5,480.70, 8,221.05 and 3,176.70

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Solution

The fourth proportional to 5,480.70, 8,221.05 and 3,176.70 is: 4,765.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,480.70 : 8,221.05 = 3,176.70 : x
  2. Step 2: Convert to fraction form
    5,480.70/8,221.05 = 3,176.70/x
  3. Step 3: Cross multiply
    5,480.70x = 8,221.05 × 3,176.70
  4. Step 4: Simplify right side
    5,480.70x = 26,115,809.54
  5. Step 5: Solve for x
    x = 26,115,809.54/5,480.70
  6. Step 6: Final answer
    x = 4,765.05

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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.