Home / 3,935.71-5,431.21-2,167.48

Finding the Fourth Proportional to 3,935.71, 5,431.21 and 2,167.48

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Solution

The fourth proportional to 3,935.71, 5,431.21 and 2,167.48 is: 2,991.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,935.71 : 5,431.21 = 2,167.48 : x
  2. Step 2: Convert to fraction form
    3,935.71/5,431.21 = 2,167.48/x
  3. Step 3: Cross multiply
    3,935.71x = 5,431.21 × 2,167.48
  4. Step 4: Simplify right side
    3,935.71x = 11,772,039.05
  5. Step 5: Solve for x
    x = 11,772,039.05/3,935.71
  6. Step 6: Final answer
    x = 2,991.08

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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.