Home / 3,976.30-5,486.88-2,207.86

Finding the Fourth Proportional to 3,976.30, 5,486.88 and 2,207.86

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Solution

The fourth proportional to 3,976.30, 5,486.88 and 2,207.86 is: 3,046.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,976.30 : 5,486.88 = 2,207.86 : x
  2. Step 2: Convert to fraction form
    3,976.30/5,486.88 = 2,207.86/x
  3. Step 3: Cross multiply
    3,976.30x = 5,486.88 × 2,207.86
  4. Step 4: Simplify right side
    3,976.30x = 12,114,262.88
  5. Step 5: Solve for x
    x = 12,114,262.88/3,976.30
  6. Step 6: Final answer
    x = 3,046.62

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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.