Home / 3,935.85-5,431.56-2,167.55

Finding the Fourth Proportional to 3,935.85, 5,431.56 and 2,167.55

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Solution

The fourth proportional to 3,935.85, 5,431.56 and 2,167.55 is: 2,991.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,935.85 : 5,431.56 = 2,167.55 : x
  2. Step 2: Convert to fraction form
    3,935.85/5,431.56 = 2,167.55/x
  3. Step 3: Cross multiply
    3,935.85x = 5,431.56 × 2,167.55
  4. Step 4: Simplify right side
    3,935.85x = 11,773,167.04
  5. Step 5: Solve for x
    x = 11,773,167.04/3,935.85
  6. Step 6: Final answer
    x = 2,991.27

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1.5x scale

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.