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Finding the Fourth Proportional to 8,675, 11,969.59 and 6,660.73

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Solution

The fourth proportional to 8,675, 11,969.59 and 6,660.73 is: 9,190.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,675 : 11,969.59 = 6,660.73 : x
  2. Step 2: Convert to fraction form
    8,675/11,969.59 = 6,660.73/x
  3. Step 3: Cross multiply
    8,675x = 11,969.59 × 6,660.73
  4. Step 4: Simplify right side
    8,675x = 79,726,207.20
  5. Step 5: Solve for x
    x = 79,726,207.20/8,675
  6. Step 6: Final answer
    x = 9,190.34

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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.