Home / 3,171.26-4,377.99-1,976.61

Finding the Fourth Proportional to 3,171.26, 4,377.99 and 1,976.61

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Solution

The fourth proportional to 3,171.26, 4,377.99 and 1,976.61 is: 2,728.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.26 : 4,377.99 = 1,976.61 : x
  2. Step 2: Convert to fraction form
    3,171.26/4,377.99 = 1,976.61/x
  3. Step 3: Cross multiply
    3,171.26x = 4,377.99 × 1,976.61
  4. Step 4: Simplify right side
    3,171.26x = 8,653,556.92
  5. Step 5: Solve for x
    x = 8,653,556.92/3,171.26
  6. Step 6: Final answer
    x = 2,728.75

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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.