Home / 2,764.92-4,147.56-1,121.43

Finding the Fourth Proportional to 2,764.92, 4,147.56 and 1,121.43

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Solution

The fourth proportional to 2,764.92, 4,147.56 and 1,121.43 is: 1,682.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,764.92 : 4,147.56 = 1,121.43 : x
  2. Step 2: Convert to fraction form
    2,764.92/4,147.56 = 1,121.43/x
  3. Step 3: Cross multiply
    2,764.92x = 4,147.56 × 1,121.43
  4. Step 4: Simplify right side
    2,764.92x = 4,651,198.21
  5. Step 5: Solve for x
    x = 4,651,198.21/2,764.92
  6. Step 6: Final answer
    x = 1,682.22

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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.