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Finding the Fourth Proportional to 8,469.09, 11,680.02 and 6,697.62

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Solution

The fourth proportional to 8,469.09, 11,680.02 and 6,697.62 is: 9,236.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,469.09 : 11,680.02 = 6,697.62 : x
  2. Step 2: Convert to fraction form
    8,469.09/11,680.02 = 6,697.62/x
  3. Step 3: Cross multiply
    8,469.09x = 11,680.02 × 6,697.62
  4. Step 4: Simplify right side
    8,469.09x = 78,228,335.55
  5. Step 5: Solve for x
    x = 78,228,335.55/8,469.09
  6. Step 6: Final answer
    x = 9,236.92

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Half scale
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Double scale
Find fourth proportional to 8,470.09, 11,681.40 and 6,698.62
Similar ratio
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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.