Home / 2,212.97-3,319.81-826.79

Finding the Fourth Proportional to 2,212.97, 3,319.81 and 826.79

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Solution

The fourth proportional to 2,212.97, 3,319.81 and 826.79 is: 1,240.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.97 : 3,319.81 = 826.79 : x
  2. Step 2: Convert to fraction form
    2,212.97/3,319.81 = 826.79/x
  3. Step 3: Cross multiply
    2,212.97x = 3,319.81 × 826.79
  4. Step 4: Simplify right side
    2,212.97x = 2,744,767.04
  5. Step 5: Solve for x
    x = 2,744,767.04/2,212.97
  6. Step 6: Final answer
    x = 1,240.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.