Home / 8,865.87-13,299.21-3,317.78

Finding the Fourth Proportional to 8,865.87, 13,299.21 and 3,317.78

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Solution

The fourth proportional to 8,865.87, 13,299.21 and 3,317.78 is: 4,976.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,865.87 : 13,299.21 = 3,317.78 : x
  2. Step 2: Convert to fraction form
    8,865.87/13,299.21 = 3,317.78/x
  3. Step 3: Cross multiply
    8,865.87x = 13,299.21 × 3,317.78
  4. Step 4: Simplify right side
    8,865.87x = 44,123,786.46
  5. Step 5: Solve for x
    x = 44,123,786.46/8,865.87
  6. Step 6: Final answer
    x = 4,976.81

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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.