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Finding the Fourth Proportional to 8,919.35, 13,371.72 and 3,369.54

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Solution

The fourth proportional to 8,919.35, 13,371.72 and 3,369.54 is: 5,051.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.35 : 13,371.72 = 3,369.54 : x
  2. Step 2: Convert to fraction form
    8,919.35/13,371.72 = 3,369.54/x
  3. Step 3: Cross multiply
    8,919.35x = 13,371.72 × 3,369.54
  4. Step 4: Simplify right side
    8,919.35x = 45,056,545.41
  5. Step 5: Solve for x
    x = 45,056,545.41/8,919.35
  6. Step 6: Final answer
    x = 5,051.55

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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.