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Finding the Fourth Proportional to 8,757.82, 13,133.91 and 2,912.86

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Solution

The fourth proportional to 8,757.82, 13,133.91 and 2,912.86 is: 4,368.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.82 : 13,133.91 = 2,912.86 : x
  2. Step 2: Convert to fraction form
    8,757.82/13,133.91 = 2,912.86/x
  3. Step 3: Cross multiply
    8,757.82x = 13,133.91 × 2,912.86
  4. Step 4: Simplify right side
    8,757.82x = 38,257,241.08
  5. Step 5: Solve for x
    x = 38,257,241.08/8,757.82
  6. Step 6: Final answer
    x = 4,368.35

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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.