Home / 3,939.03-5,436.65-2,261.57

Finding the Fourth Proportional to 3,939.03, 5,436.65 and 2,261.57

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Solution

The fourth proportional to 3,939.03, 5,436.65 and 2,261.57 is: 3,121.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.03 : 5,436.65 = 2,261.57 : x
  2. Step 2: Convert to fraction form
    3,939.03/5,436.65 = 2,261.57/x
  3. Step 3: Cross multiply
    3,939.03x = 5,436.65 × 2,261.57
  4. Step 4: Simplify right side
    3,939.03x = 12,295,364.54
  5. Step 5: Solve for x
    x = 12,295,364.54/3,939.03
  6. Step 6: Final answer
    x = 3,121.42

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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.