Home / 3,997.20-5,516.19-2,228.75

Finding the Fourth Proportional to 3,997.20, 5,516.19 and 2,228.75

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Solution

The fourth proportional to 3,997.20, 5,516.19 and 2,228.75 is: 3,075.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,997.20 : 5,516.19 = 2,228.75 : x
  2. Step 2: Convert to fraction form
    3,997.20/5,516.19 = 2,228.75/x
  3. Step 3: Cross multiply
    3,997.20x = 5,516.19 × 2,228.75
  4. Step 4: Simplify right side
    3,997.20x = 12,294,208.46
  5. Step 5: Solve for x
    x = 12,294,208.46/3,997.20
  6. Step 6: Final answer
    x = 3,075.71

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Half scale
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Double 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.