Home / 2,169.09-3,250.94-1,128.54

Finding the Fourth Proportional to 2,169.09, 3,250.94 and 1,128.54

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Solution

The fourth proportional to 2,169.09, 3,250.94 and 1,128.54 is: 1,691.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,169.09 : 3,250.94 = 1,128.54 : x
  2. Step 2: Convert to fraction form
    2,169.09/3,250.94 = 1,128.54/x
  3. Step 3: Cross multiply
    2,169.09x = 3,250.94 × 1,128.54
  4. Step 4: Simplify right side
    2,169.09x = 3,668,822.38
  5. Step 5: Solve for x
    x = 3,668,822.38/2,169.09
  6. Step 6: Final answer
    x = 1,691.41

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1.5x scale

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.