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Finding the Fourth Proportional to 8,779.49, 13,169.21 and 2,936.09

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Solution

The fourth proportional to 8,779.49, 13,169.21 and 2,936.09 is: 4,404.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779.49 : 13,169.21 = 2,936.09 : x
  2. Step 2: Convert to fraction form
    8,779.49/13,169.21 = 2,936.09/x
  3. Step 3: Cross multiply
    8,779.49x = 13,169.21 × 2,936.09
  4. Step 4: Simplify right side
    8,779.49x = 38,665,905.26
  5. Step 5: Solve for x
    x = 38,665,905.26/8,779.49
  6. Step 6: Final answer
    x = 4,404.12

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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.