Home / 3,996.40-5,514.96-2,228.20

Finding the Fourth Proportional to 3,996.40, 5,514.96 and 2,228.20

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Solution

The fourth proportional to 3,996.40, 5,514.96 and 2,228.20 is: 3,074.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,996.40 : 5,514.96 = 2,228.20 : x
  2. Step 2: Convert to fraction form
    3,996.40/5,514.96 = 2,228.20/x
  3. Step 3: Cross multiply
    3,996.40x = 5,514.96 × 2,228.20
  4. Step 4: Simplify right side
    3,996.40x = 12,288,433.87
  5. Step 5: Solve for x
    x = 12,288,433.87/3,996.40
  6. Step 6: Final answer
    x = 3,074.88

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.