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Finding the Fourth Proportional to 8,859.56, 12,221.70 and 6,760.04

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Solution

The fourth proportional to 8,859.56, 12,221.70 and 6,760.04 is: 9,325.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,859.56 : 12,221.70 = 6,760.04 : x
  2. Step 2: Convert to fraction form
    8,859.56/12,221.70 = 6,760.04/x
  3. Step 3: Cross multiply
    8,859.56x = 12,221.70 × 6,760.04
  4. Step 4: Simplify right side
    8,859.56x = 82,619,180.87
  5. Step 5: Solve for x
    x = 82,619,180.87/8,859.56
  6. Step 6: Final answer
    x = 9,325.43

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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.