Home / 7,815.54-11,723.36-3,198.54

Finding the Fourth Proportional to 7,815.54, 11,723.36 and 3,198.54

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Solution

The fourth proportional to 7,815.54, 11,723.36 and 3,198.54 is: 4,797.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.54 : 11,723.36 = 3,198.54 : x
  2. Step 2: Convert to fraction form
    7,815.54/11,723.36 = 3,198.54/x
  3. Step 3: Cross multiply
    7,815.54x = 11,723.36 × 3,198.54
  4. Step 4: Simplify right side
    7,815.54x = 37,497,635.89
  5. Step 5: Solve for x
    x = 37,497,635.89/7,815.54
  6. Step 6: Final answer
    x = 4,797.83

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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.