Home / 3,965.14-5,471.92-2,172.71

Finding the Fourth Proportional to 3,965.14, 5,471.92 and 2,172.71

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Solution

The fourth proportional to 3,965.14, 5,471.92 and 2,172.71 is: 2,998.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,965.14 : 5,471.92 = 2,172.71 : x
  2. Step 2: Convert to fraction form
    3,965.14/5,471.92 = 2,172.71/x
  3. Step 3: Cross multiply
    3,965.14x = 5,471.92 × 2,172.71
  4. Step 4: Simplify right side
    3,965.14x = 11,888,895.30
  5. Step 5: Solve for x
    x = 11,888,895.30/3,965.14
  6. Step 6: Final answer
    x = 2,998.35

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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.