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Finding the Fourth Proportional to 8,668.05, 13,003.20 and 2,822.67

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Solution

The fourth proportional to 8,668.05, 13,003.20 and 2,822.67 is: 4,234.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.05 : 13,003.20 = 2,822.67 : x
  2. Step 2: Convert to fraction form
    8,668.05/13,003.20 = 2,822.67/x
  3. Step 3: Cross multiply
    8,668.05x = 13,003.20 × 2,822.67
  4. Step 4: Simplify right side
    8,668.05x = 36,703,742.54
  5. Step 5: Solve for x
    x = 36,703,742.54/8,668.05
  6. Step 6: Final answer
    x = 4,234.37

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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.