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Finding the Fourth Proportional to 8,779.42, 13,169.85 and 2,936.08

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Solution

The fourth proportional to 8,779.42, 13,169.85 and 2,936.08 is: 4,404.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779.42 : 13,169.85 = 2,936.08 : x
  2. Step 2: Convert to fraction form
    8,779.42/13,169.85 = 2,936.08/x
  3. Step 3: Cross multiply
    8,779.42x = 13,169.85 × 2,936.08
  4. Step 4: Simplify right side
    8,779.42x = 38,667,733.19
  5. Step 5: Solve for x
    x = 38,667,733.19/8,779.42
  6. Step 6: Final answer
    x = 4,404.36

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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.