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Finding the Fourth Proportional to 8,855.72, 13,274.30 and 3,306.84

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Solution

The fourth proportional to 8,855.72, 13,274.30 and 3,306.84 is: 4,956.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,855.72 : 13,274.30 = 3,306.84 : x
  2. Step 2: Convert to fraction form
    8,855.72/13,274.30 = 3,306.84/x
  3. Step 3: Cross multiply
    8,855.72x = 13,274.30 × 3,306.84
  4. Step 4: Simplify right side
    8,855.72x = 43,895,986.21
  5. Step 5: Solve for x
    x = 43,895,986.21/8,855.72
  6. Step 6: Final answer
    x = 4,956.79

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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.