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Finding the Fourth Proportional to 8,469.04, 11,679.24 and 6,479.68

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Solution

The fourth proportional to 8,469.04, 11,679.24 and 6,479.68 is: 8,935.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,469.04 : 11,679.24 = 6,479.68 : x
  2. Step 2: Convert to fraction form
    8,469.04/11,679.24 = 6,479.68/x
  3. Step 3: Cross multiply
    8,469.04x = 11,679.24 × 6,479.68
  4. Step 4: Simplify right side
    8,469.04x = 75,677,737.84
  5. Step 5: Solve for x
    x = 75,677,737.84/8,469.04
  6. Step 6: Final answer
    x = 8,935.81

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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.