Home / 3,939.75-5,436.90-2,367.54

Finding the Fourth Proportional to 3,939.75, 5,436.90 and 2,367.54

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Solution

The fourth proportional to 3,939.75, 5,436.90 and 2,367.54 is: 3,267.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.75 : 5,436.90 = 2,367.54 : x
  2. Step 2: Convert to fraction form
    3,939.75/5,436.90 = 2,367.54/x
  3. Step 3: Cross multiply
    3,939.75x = 5,436.90 × 2,367.54
  4. Step 4: Simplify right side
    3,939.75x = 12,872,078.23
  5. Step 5: Solve for x
    x = 12,872,078.23/3,939.75
  6. Step 6: Final answer
    x = 3,267.23

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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.