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Finding the Fourth Proportional to 8,626.57, 11,896.78 and 6,394.02

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Solution

The fourth proportional to 8,626.57, 11,896.78 and 6,394.02 is: 8,817.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,626.57 : 11,896.78 = 6,394.02 : x
  2. Step 2: Convert to fraction form
    8,626.57/11,896.78 = 6,394.02/x
  3. Step 3: Cross multiply
    8,626.57x = 11,896.78 × 6,394.02
  4. Step 4: Simplify right side
    8,626.57x = 76,068,249.26
  5. Step 5: Solve for x
    x = 76,068,249.26/8,626.57
  6. Step 6: Final answer
    x = 8,817.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.