Home / 3,170.82-4,757.19-979.74

Finding the Fourth Proportional to 3,170.82, 4,757.19 and 979.74

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Solution

The fourth proportional to 3,170.82, 4,757.19 and 979.74 is: 1,469.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,170.82 : 4,757.19 = 979.74 : x
  2. Step 2: Convert to fraction form
    3,170.82/4,757.19 = 979.74/x
  3. Step 3: Cross multiply
    3,170.82x = 4,757.19 × 979.74
  4. Step 4: Simplify right side
    3,170.82x = 4,660,809.33
  5. Step 5: Solve for x
    x = 4,660,809.33/3,170.82
  6. Step 6: Final answer
    x = 1,469.91

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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.