Home / 3,940.37-5,437.64-2,147.87

Finding the Fourth Proportional to 3,940.37, 5,437.64 and 2,147.87

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Solution

The fourth proportional to 3,940.37, 5,437.64 and 2,147.87 is: 2,964.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.37 : 5,437.64 = 2,147.87 : x
  2. Step 2: Convert to fraction form
    3,940.37/5,437.64 = 2,147.87/x
  3. Step 3: Cross multiply
    3,940.37x = 5,437.64 × 2,147.87
  4. Step 4: Simplify right side
    3,940.37x = 11,679,338.37
  5. Step 5: Solve for x
    x = 11,679,338.37/3,940.37
  6. Step 6: Final answer
    x = 2,964.02

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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.