Home / 7,961.94-11,942.29-3,280.75

Finding the Fourth Proportional to 7,961.94, 11,942.29 and 3,280.75

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Solution

The fourth proportional to 7,961.94, 11,942.29 and 3,280.75 is: 4,920.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,961.94 : 11,942.29 = 3,280.75 : x
  2. Step 2: Convert to fraction form
    7,961.94/11,942.29 = 3,280.75/x
  3. Step 3: Cross multiply
    7,961.94x = 11,942.29 × 3,280.75
  4. Step 4: Simplify right side
    7,961.94x = 39,179,667.92
  5. Step 5: Solve for x
    x = 39,179,667.92/7,961.94
  6. Step 6: Final answer
    x = 4,920.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.