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Finding the Fourth Proportional to 3,171.69, 4,757.54 and 863.19

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Solution

The fourth proportional to 3,171.69, 4,757.54 and 863.19 is: 1,294.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.69 : 4,757.54 = 863.19 : x
  2. Step 2: Convert to fraction form
    3,171.69/4,757.54 = 863.19/x
  3. Step 3: Cross multiply
    3,171.69x = 4,757.54 × 863.19
  4. Step 4: Simplify right side
    3,171.69x = 4,106,660.95
  5. Step 5: Solve for x
    x = 4,106,660.95/3,171.69
  6. Step 6: Final answer
    x = 1,294.79

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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.