Home / 8,121.27-12,174.36-2,853.39

Finding the Fourth Proportional to 8,121.27, 12,174.36 and 2,853.39

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Solution

The fourth proportional to 8,121.27, 12,174.36 and 2,853.39 is: 4,277.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.27 : 12,174.36 = 2,853.39 : x
  2. Step 2: Convert to fraction form
    8,121.27/12,174.36 = 2,853.39/x
  3. Step 3: Cross multiply
    8,121.27x = 12,174.36 × 2,853.39
  4. Step 4: Simplify right side
    8,121.27x = 34,738,197.08
  5. Step 5: Solve for x
    x = 34,738,197.08/8,121.27
  6. Step 6: Final answer
    x = 4,277.43

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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.