Home / 3,982-5,495.12-2,213.76

Finding the Fourth Proportional to 3,982, 5,495.12 and 2,213.76

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Solution

The fourth proportional to 3,982, 5,495.12 and 2,213.76 is: 3,054.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982 : 5,495.12 = 2,213.76 : x
  2. Step 2: Convert to fraction form
    3,982/5,495.12 = 2,213.76/x
  3. Step 3: Cross multiply
    3,982x = 5,495.12 × 2,213.76
  4. Step 4: Simplify right side
    3,982x = 12,164,876.85
  5. Step 5: Solve for x
    x = 12,164,876.85/3,982
  6. Step 6: Final answer
    x = 3,054.97

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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.