Home / 3,858.42-5,325.09-2,179.90

Finding the Fourth Proportional to 3,858.42, 5,325.09 and 2,179.90

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Solution

The fourth proportional to 3,858.42, 5,325.09 and 2,179.90 is: 3,008.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858.42 : 5,325.09 = 2,179.90 : x
  2. Step 2: Convert to fraction form
    3,858.42/5,325.09 = 2,179.90/x
  3. Step 3: Cross multiply
    3,858.42x = 5,325.09 × 2,179.90
  4. Step 4: Simplify right side
    3,858.42x = 11,608,163.69
  5. Step 5: Solve for x
    x = 11,608,163.69/3,858.42
  6. Step 6: Final answer
    x = 3,008.53

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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.