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Finding the Fourth Proportional to 6,786.80, 10,174.42 and 3,087.73

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Solution

The fourth proportional to 6,786.80, 10,174.42 and 3,087.73 is: 4,628.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,786.80 : 10,174.42 = 3,087.73 : x
  2. Step 2: Convert to fraction form
    6,786.80/10,174.42 = 3,087.73/x
  3. Step 3: Cross multiply
    6,786.80x = 10,174.42 × 3,087.73
  4. Step 4: Simplify right side
    6,786.80x = 31,415,861.87
  5. Step 5: Solve for x
    x = 31,415,861.87/6,786.80
  6. Step 6: Final answer
    x = 4,628.97

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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.