Home / 3,982.15-5,495.34-2,213.86

Finding the Fourth Proportional to 3,982.15, 5,495.34 and 2,213.86

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Solution

The fourth proportional to 3,982.15, 5,495.34 and 2,213.86 is: 3,055.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982.15 : 5,495.34 = 2,213.86 : x
  2. Step 2: Convert to fraction form
    3,982.15/5,495.34 = 2,213.86/x
  3. Step 3: Cross multiply
    3,982.15x = 5,495.34 × 2,213.86
  4. Step 4: Simplify right side
    3,982.15x = 12,165,913.41
  5. Step 5: Solve for x
    x = 12,165,913.41/3,982.15
  6. Step 6: Final answer
    x = 3,055.11

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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.