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Finding the Fourth Proportional to 8,704.29, 13,074.12 and 7,687.34

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Solution

The fourth proportional to 8,704.29, 13,074.12 and 7,687.34 is: 11,546.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,704.29 : 13,074.12 = 7,687.34 : x
  2. Step 2: Convert to fraction form
    8,704.29/13,074.12 = 7,687.34/x
  3. Step 3: Cross multiply
    8,704.29x = 13,074.12 × 7,687.34
  4. Step 4: Simplify right side
    8,704.29x = 100,505,140.27
  5. Step 5: Solve for x
    x = 100,505,140.27/8,704.29
  6. Step 6: Final answer
    x = 11,546.62

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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.