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Finding the Fourth Proportional to 8,791.74, 13,175.73 and 3,239.87

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Solution

The fourth proportional to 8,791.74, 13,175.73 and 3,239.87 is: 4,855.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,791.74 : 13,175.73 = 3,239.87 : x
  2. Step 2: Convert to fraction form
    8,791.74/13,175.73 = 3,239.87/x
  3. Step 3: Cross multiply
    8,791.74x = 13,175.73 × 3,239.87
  4. Step 4: Simplify right side
    8,791.74x = 42,687,586.48
  5. Step 5: Solve for x
    x = 42,687,586.48/8,791.74
  6. Step 6: Final answer
    x = 4,855.42

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1.5x scale

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.