Home / 2,160.27-3,240.68-699.57

Finding the Fourth Proportional to 2,160.27, 3,240.68 and 699.57

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Solution

The fourth proportional to 2,160.27, 3,240.68 and 699.57 is: 1,049.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.27 : 3,240.68 = 699.57 : x
  2. Step 2: Convert to fraction form
    2,160.27/3,240.68 = 699.57/x
  3. Step 3: Cross multiply
    2,160.27x = 3,240.68 × 699.57
  4. Step 4: Simplify right side
    2,160.27x = 2,267,079.01
  5. Step 5: Solve for x
    x = 2,267,079.01/2,160.27
  6. Step 6: Final answer
    x = 1,049.44

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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.