Home / 2,689.14-4,034.85-1,391.52

Finding the Fourth Proportional to 2,689.14, 4,034.85 and 1,391.52

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Solution

The fourth proportional to 2,689.14, 4,034.85 and 1,391.52 is: 2,087.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.14 : 4,034.85 = 1,391.52 : x
  2. Step 2: Convert to fraction form
    2,689.14/4,034.85 = 1,391.52/x
  3. Step 3: Cross multiply
    2,689.14x = 4,034.85 × 1,391.52
  4. Step 4: Simplify right side
    2,689.14x = 5,614,574.47
  5. Step 5: Solve for x
    x = 5,614,574.47/2,689.14
  6. Step 6: Final answer
    x = 2,087.87

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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.