Home / 2,137.38-2,949.78-1,689.85

Finding the Fourth Proportional to 2,137.38, 2,949.78 and 1,689.85

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Solution

The fourth proportional to 2,137.38, 2,949.78 and 1,689.85 is: 2,332.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,137.38 : 2,949.78 = 1,689.85 : x
  2. Step 2: Convert to fraction form
    2,137.38/2,949.78 = 1,689.85/x
  3. Step 3: Cross multiply
    2,137.38x = 2,949.78 × 1,689.85
  4. Step 4: Simplify right side
    2,137.38x = 4,984,685.73
  5. Step 5: Solve for x
    x = 4,984,685.73/2,137.38
  6. Step 6: Final answer
    x = 2,332.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.