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Finding the Fourth Proportional to 8,311.04, 11,469.92 and 6,318.56

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Solution

The fourth proportional to 8,311.04, 11,469.92 and 6,318.56 is: 8,720.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,311.04 : 11,469.92 = 6,318.56 : x
  2. Step 2: Convert to fraction form
    8,311.04/11,469.92 = 6,318.56/x
  3. Step 3: Cross multiply
    8,311.04x = 11,469.92 × 6,318.56
  4. Step 4: Simplify right side
    8,311.04x = 72,473,377.72
  5. Step 5: Solve for x
    x = 72,473,377.72/8,311.04
  6. Step 6: Final answer
    x = 8,720.13

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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.