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Finding the Fourth Proportional to 8,868.56, 13,305.13 and 3,321.99

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Solution

The fourth proportional to 8,868.56, 13,305.13 and 3,321.99 is: 4,983.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,868.56 : 13,305.13 = 3,321.99 : x
  2. Step 2: Convert to fraction form
    8,868.56/13,305.13 = 3,321.99/x
  3. Step 3: Cross multiply
    8,868.56x = 13,305.13 × 3,321.99
  4. Step 4: Simplify right side
    8,868.56x = 44,199,508.81
  5. Step 5: Solve for x
    x = 44,199,508.81/8,868.56
  6. Step 6: Final answer
    x = 4,983.84

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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.