Home / 3,941.12-5,438.72-2,172.64

Finding the Fourth Proportional to 3,941.12, 5,438.72 and 2,172.64

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Solution

The fourth proportional to 3,941.12, 5,438.72 and 2,172.64 is: 2,998.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,941.12 : 5,438.72 = 2,172.64 : x
  2. Step 2: Convert to fraction form
    3,941.12/5,438.72 = 2,172.64/x
  3. Step 3: Cross multiply
    3,941.12x = 5,438.72 × 2,172.64
  4. Step 4: Simplify right side
    3,941.12x = 11,816,380.62
  5. Step 5: Solve for x
    x = 11,816,380.62/3,941.12
  6. Step 6: Final answer
    x = 2,998.23

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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.