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Finding the Fourth Proportional to 8,859.68, 13,286.40 and 2,618.03

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Solution

The fourth proportional to 8,859.68, 13,286.40 and 2,618.03 is: 3,926.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,859.68 : 13,286.40 = 2,618.03 : x
  2. Step 2: Convert to fraction form
    8,859.68/13,286.40 = 2,618.03/x
  3. Step 3: Cross multiply
    8,859.68x = 13,286.40 × 2,618.03
  4. Step 4: Simplify right side
    8,859.68x = 34,784,193.79
  5. Step 5: Solve for x
    x = 34,784,193.79/8,859.68
  6. Step 6: Final answer
    x = 3,926.12

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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.