Home / 3,939.06-5,396.49-3,791.34

Finding the Fourth Proportional to 3,939.06, 5,396.49 and 3,791.34

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Solution

The fourth proportional to 3,939.06, 5,396.49 and 3,791.34 is: 5,194.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.06 : 5,396.49 = 3,791.34 : x
  2. Step 2: Convert to fraction form
    3,939.06/5,396.49 = 3,791.34/x
  3. Step 3: Cross multiply
    3,939.06x = 5,396.49 × 3,791.34
  4. Step 4: Simplify right side
    3,939.06x = 20,459,928.40
  5. Step 5: Solve for x
    x = 20,459,928.40/3,939.06
  6. Step 6: Final answer
    x = 5,194.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.