Home / 2,761.27-4,145.99-1,121.02

Finding the Fourth Proportional to 2,761.27, 4,145.99 and 1,121.02

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Solution

The fourth proportional to 2,761.27, 4,145.99 and 1,121.02 is: 1,683.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,761.27 : 4,145.99 = 1,121.02 : x
  2. Step 2: Convert to fraction form
    2,761.27/4,145.99 = 1,121.02/x
  3. Step 3: Cross multiply
    2,761.27x = 4,145.99 × 1,121.02
  4. Step 4: Simplify right side
    2,761.27x = 4,647,737.71
  5. Step 5: Solve for x
    x = 4,647,737.71/2,761.27
  6. Step 6: Final answer
    x = 1,683.19

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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.