Home / 3,938.26-5,434.50-2,169.49

Finding the Fourth Proportional to 3,938.26, 5,434.50 and 2,169.49

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Solution

The fourth proportional to 3,938.26, 5,434.50 and 2,169.49 is: 2,993.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.26 : 5,434.50 = 2,169.49 : x
  2. Step 2: Convert to fraction form
    3,938.26/5,434.50 = 2,169.49/x
  3. Step 3: Cross multiply
    3,938.26x = 5,434.50 × 2,169.49
  4. Step 4: Simplify right side
    3,938.26x = 11,790,093.41
  5. Step 5: Solve for x
    x = 11,790,093.41/3,938.26
  6. Step 6: Final answer
    x = 2,993.73

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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.