Home / 2,169.38-2,992.97-1,329.78

Finding the Fourth Proportional to 2,169.38, 2,992.97 and 1,329.78

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Solution

The fourth proportional to 2,169.38, 2,992.97 and 1,329.78 is: 1,834.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,169.38 : 2,992.97 = 1,329.78 : x
  2. Step 2: Convert to fraction form
    2,169.38/2,992.97 = 1,329.78/x
  3. Step 3: Cross multiply
    2,169.38x = 2,992.97 × 1,329.78
  4. Step 4: Simplify right side
    2,169.38x = 3,979,991.65
  5. Step 5: Solve for x
    x = 3,979,991.65/2,169.38
  6. Step 6: Final answer
    x = 1,834.62

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1.5x scale

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.