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Finding the Fourth Proportional to 7,658.69, 11,481.19 and 3,707.72

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Solution

The fourth proportional to 7,658.69, 11,481.19 and 3,707.72 is: 5,558.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,658.69 : 11,481.19 = 3,707.72 : x
  2. Step 2: Convert to fraction form
    7,658.69/11,481.19 = 3,707.72/x
  3. Step 3: Cross multiply
    7,658.69x = 11,481.19 × 3,707.72
  4. Step 4: Simplify right side
    7,658.69x = 42,568,971.11
  5. Step 5: Solve for x
    x = 42,568,971.11/7,658.69
  6. Step 6: Final answer
    x = 5,558.26

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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.