Home / 6,921.18-9,550.38-3,936.42

Finding the Fourth Proportional to 6,921.18, 9,550.38 and 3,936.42

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Solution

The fourth proportional to 6,921.18, 9,550.38 and 3,936.42 is: 5,431.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921.18 : 9,550.38 = 3,936.42 : x
  2. Step 2: Convert to fraction form
    6,921.18/9,550.38 = 3,936.42/x
  3. Step 3: Cross multiply
    6,921.18x = 9,550.38 × 3,936.42
  4. Step 4: Simplify right side
    6,921.18x = 37,594,306.84
  5. Step 5: Solve for x
    x = 37,594,306.84/6,921.18
  6. Step 6: Final answer
    x = 5,431.78

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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.