Home / 3,982.20-5,495.10-2,213.70

Finding the Fourth Proportional to 3,982.20, 5,495.10 and 2,213.70

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Solution

The fourth proportional to 3,982.20, 5,495.10 and 2,213.70 is: 3,054.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982.20 : 5,495.10 = 2,213.70 : x
  2. Step 2: Convert to fraction form
    3,982.20/5,495.10 = 2,213.70/x
  3. Step 3: Cross multiply
    3,982.20x = 5,495.10 × 2,213.70
  4. Step 4: Simplify right side
    3,982.20x = 12,164,502.87
  5. Step 5: Solve for x
    x = 12,164,502.87/3,982.20
  6. Step 6: Final answer
    x = 3,054.72

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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.