Home / 5,178.57-7,761.69-2,982.75

Finding the Fourth Proportional to 5,178.57, 7,761.69 and 2,982.75

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Solution

The fourth proportional to 5,178.57, 7,761.69 and 2,982.75 is: 4,470.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.57 : 7,761.69 = 2,982.75 : x
  2. Step 2: Convert to fraction form
    5,178.57/7,761.69 = 2,982.75/x
  3. Step 3: Cross multiply
    5,178.57x = 7,761.69 × 2,982.75
  4. Step 4: Simplify right side
    5,178.57x = 23,151,180.85
  5. Step 5: Solve for x
    x = 23,151,180.85/5,178.57
  6. Step 6: Final answer
    x = 4,470.57

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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.