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Finding the Fourth Proportional to 8,823.81, 13,239.80 and 3,279.08

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Solution

The fourth proportional to 8,823.81, 13,239.80 and 3,279.08 is: 4,920.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,823.81 : 13,239.80 = 3,279.08 : x
  2. Step 2: Convert to fraction form
    8,823.81/13,239.80 = 3,279.08/x
  3. Step 3: Cross multiply
    8,823.81x = 13,239.80 × 3,279.08
  4. Step 4: Simplify right side
    8,823.81x = 43,414,355.03
  5. Step 5: Solve for x
    x = 43,414,355.03/8,823.81
  6. Step 6: Final answer
    x = 4,920.14

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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.