Home / 2,161.67-3,244.24-1,121.97

Finding the Fourth Proportional to 2,161.67, 3,244.24 and 1,121.97

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Solution

The fourth proportional to 2,161.67, 3,244.24 and 1,121.97 is: 1,683.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.67 : 3,244.24 = 1,121.97 : x
  2. Step 2: Convert to fraction form
    2,161.67/3,244.24 = 1,121.97/x
  3. Step 3: Cross multiply
    2,161.67x = 3,244.24 × 1,121.97
  4. Step 4: Simplify right side
    2,161.67x = 3,639,949.31
  5. Step 5: Solve for x
    x = 3,639,949.31/2,161.67
  6. Step 6: Final answer
    x = 1,683.86

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1.5x scale

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.