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Finding the Fourth Proportional to 8,668.92, 13,003.80 and 3,403.45

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Solution

The fourth proportional to 8,668.92, 13,003.80 and 3,403.45 is: 5,105.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.92 : 13,003.80 = 3,403.45 : x
  2. Step 2: Convert to fraction form
    8,668.92/13,003.80 = 3,403.45/x
  3. Step 3: Cross multiply
    8,668.92x = 13,003.80 × 3,403.45
  4. Step 4: Simplify right side
    8,668.92x = 44,257,783.11
  5. Step 5: Solve for x
    x = 44,257,783.11/8,668.92
  6. Step 6: Final answer
    x = 5,105.34

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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.