Home / 7,418.56-11,128.54-2,738.38

Finding the Fourth Proportional to 7,418.56, 11,128.54 and 2,738.38

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Solution

The fourth proportional to 7,418.56, 11,128.54 and 2,738.38 is: 4,107.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,418.56 : 11,128.54 = 2,738.38 : x
  2. Step 2: Convert to fraction form
    7,418.56/11,128.54 = 2,738.38/x
  3. Step 3: Cross multiply
    7,418.56x = 11,128.54 × 2,738.38
  4. Step 4: Simplify right side
    7,418.56x = 30,474,171.37
  5. Step 5: Solve for x
    x = 30,474,171.37/7,418.56
  6. Step 6: Final answer
    x = 4,107.83

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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.