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Finding the Fourth Proportional to 3,786.56, 5,671.03 and 3,655.19

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Solution

The fourth proportional to 3,786.56, 5,671.03 and 3,655.19 is: 5,474.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,786.56 : 5,671.03 = 3,655.19 : x
  2. Step 2: Convert to fraction form
    3,786.56/5,671.03 = 3,655.19/x
  3. Step 3: Cross multiply
    3,786.56x = 5,671.03 × 3,655.19
  4. Step 4: Simplify right side
    3,786.56x = 20,728,704.04
  5. Step 5: Solve for x
    x = 20,728,704.04/3,786.56
  6. Step 6: Final answer
    x = 5,474.28

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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.