Home / 3,935.81-5,431.42-2,167.41

Finding the Fourth Proportional to 3,935.81, 5,431.42 and 2,167.41

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Solution

The fourth proportional to 3,935.81, 5,431.42 and 2,167.41 is: 2,991.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,935.81 : 5,431.42 = 2,167.41 : x
  2. Step 2: Convert to fraction form
    3,935.81/5,431.42 = 2,167.41/x
  3. Step 3: Cross multiply
    3,935.81x = 5,431.42 × 2,167.41
  4. Step 4: Simplify right side
    3,935.81x = 11,772,137.10
  5. Step 5: Solve for x
    x = 11,772,137.10/3,935.81
  6. Step 6: Final answer
    x = 2,991.03

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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.