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Finding the Fourth Proportional to 7,872.27, 10,857.27 and 5,745.41

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Solution

The fourth proportional to 7,872.27, 10,857.27 and 5,745.41 is: 7,923.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,872.27 : 10,857.27 = 5,745.41 : x
  2. Step 2: Convert to fraction form
    7,872.27/10,857.27 = 5,745.41/x
  3. Step 3: Cross multiply
    7,872.27x = 10,857.27 × 5,745.41
  4. Step 4: Simplify right side
    7,872.27x = 62,379,467.63
  5. Step 5: Solve for x
    x = 62,379,467.63/7,872.27
  6. Step 6: Final answer
    x = 7,923.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.