Home / 3,940.10-5,437.09-2,171.72

Finding the Fourth Proportional to 3,940.10, 5,437.09 and 2,171.72

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Solution

The fourth proportional to 3,940.10, 5,437.09 and 2,171.72 is: 2,996.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.10 : 5,437.09 = 2,171.72 : x
  2. Step 2: Convert to fraction form
    3,940.10/5,437.09 = 2,171.72/x
  3. Step 3: Cross multiply
    3,940.10x = 5,437.09 × 2,171.72
  4. Step 4: Simplify right side
    3,940.10x = 11,807,809.91
  5. Step 5: Solve for x
    x = 11,807,809.91/3,940.10
  6. Step 6: Final answer
    x = 2,996.83

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