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Finding the Fourth Proportional to 8,986.11, 13,479 and 3,723.95

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Solution

The fourth proportional to 8,986.11, 13,479 and 3,723.95 is: 5,585.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,986.11 : 13,479 = 3,723.95 : x
  2. Step 2: Convert to fraction form
    8,986.11/13,479 = 3,723.95/x
  3. Step 3: Cross multiply
    8,986.11x = 13,479 × 3,723.95
  4. Step 4: Simplify right side
    8,986.11x = 50,195,054.66
  5. Step 5: Solve for x
    x = 50,195,054.66/8,986.11
  6. Step 6: Final answer
    x = 5,585.85

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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.