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Finding the Fourth Proportional to 8,668.64, 12,993.42 and 3,402.06

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Solution

The fourth proportional to 8,668.64, 12,993.42 and 3,402.06 is: 5,099.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.64 : 12,993.42 = 3,402.06 : x
  2. Step 2: Convert to fraction form
    8,668.64/12,993.42 = 3,402.06/x
  3. Step 3: Cross multiply
    8,668.64x = 12,993.42 × 3,402.06
  4. Step 4: Simplify right side
    8,668.64x = 44,204,394.45
  5. Step 5: Solve for x
    x = 44,204,394.45/8,668.64
  6. Step 6: Final answer
    x = 5,099.35

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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.