Home / 3,179.75-4,385.61-2,786.09

Finding the Fourth Proportional to 3,179.75, 4,385.61 and 2,786.09

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Solution

The fourth proportional to 3,179.75, 4,385.61 and 2,786.09 is: 3,842.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.75 : 4,385.61 = 2,786.09 : x
  2. Step 2: Convert to fraction form
    3,179.75/4,385.61 = 2,786.09/x
  3. Step 3: Cross multiply
    3,179.75x = 4,385.61 × 2,786.09
  4. Step 4: Simplify right side
    3,179.75x = 12,218,682.24
  5. Step 5: Solve for x
    x = 12,218,682.24/3,179.75
  6. Step 6: Final answer
    x = 3,842.66

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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.