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Finding the Fourth Proportional to 8,399.81, 11,591.75 and 4,673.81

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Solution

The fourth proportional to 8,399.81, 11,591.75 and 4,673.81 is: 6,449.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,399.81 : 11,591.75 = 4,673.81 : x
  2. Step 2: Convert to fraction form
    8,399.81/11,591.75 = 4,673.81/x
  3. Step 3: Cross multiply
    8,399.81x = 11,591.75 × 4,673.81
  4. Step 4: Simplify right side
    8,399.81x = 54,177,677.73
  5. Step 5: Solve for x
    x = 54,177,677.73/8,399.81
  6. Step 6: Final answer
    x = 6,449.87

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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.