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Finding the Fourth Proportional to 8,668.35, 13,002.89 and 7,217.73

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Solution

The fourth proportional to 8,668.35, 13,002.89 and 7,217.73 is: 10,826.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.35 : 13,002.89 = 7,217.73 : x
  2. Step 2: Convert to fraction form
    8,668.35/13,002.89 = 7,217.73/x
  3. Step 3: Cross multiply
    8,668.35x = 13,002.89 × 7,217.73
  4. Step 4: Simplify right side
    8,668.35x = 93,851,313.15
  5. Step 5: Solve for x
    x = 93,851,313.15/8,668.35
  6. Step 6: Final answer
    x = 10,826.89

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1.5x scale

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.