Home / 8,919.12-13,379.88-3,723.78

Finding the Fourth Proportional to 8,919.12, 13,379.88 and 3,723.78

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Solution

The fourth proportional to 8,919.12, 13,379.88 and 3,723.78 is: 5,586.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.12 : 13,379.88 = 3,723.78 : x
  2. Step 2: Convert to fraction form
    8,919.12/13,379.88 = 3,723.78/x
  3. Step 3: Cross multiply
    8,919.12x = 13,379.88 × 3,723.78
  4. Step 4: Simplify right side
    8,919.12x = 49,823,729.55
  5. Step 5: Solve for x
    x = 49,823,729.55/8,919.12
  6. Step 6: Final answer
    x = 5,586.17

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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.