Home / 7,678.56-11,517.30-2,747.28

Finding the Fourth Proportional to 7,678.56, 11,517.30 and 2,747.28

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Solution

The fourth proportional to 7,678.56, 11,517.30 and 2,747.28 is: 4,120.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,678.56 : 11,517.30 = 2,747.28 : x
  2. Step 2: Convert to fraction form
    7,678.56/11,517.30 = 2,747.28/x
  3. Step 3: Cross multiply
    7,678.56x = 11,517.30 × 2,747.28
  4. Step 4: Simplify right side
    7,678.56x = 31,641,247.94
  5. Step 5: Solve for x
    x = 31,641,247.94/7,678.56
  6. Step 6: Final answer
    x = 4,120.73

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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.