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Finding the Fourth Proportional to 8,691.66, 11,993.59 and 5,334.62

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Solution

The fourth proportional to 8,691.66, 11,993.59 and 5,334.62 is: 7,361.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.66 : 11,993.59 = 5,334.62 : x
  2. Step 2: Convert to fraction form
    8,691.66/11,993.59 = 5,334.62/x
  3. Step 3: Cross multiply
    8,691.66x = 11,993.59 × 5,334.62
  4. Step 4: Simplify right side
    8,691.66x = 63,981,158.44
  5. Step 5: Solve for x
    x = 63,981,158.44/8,691.66
  6. Step 6: Final answer
    x = 7,361.21

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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.