Home / 6,171.81-8,519.91-3,936.75

Finding the Fourth Proportional to 6,171.81, 8,519.91 and 3,936.75

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Solution

The fourth proportional to 6,171.81, 8,519.91 and 3,936.75 is: 5,434.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,171.81 : 8,519.91 = 3,936.75 : x
  2. Step 2: Convert to fraction form
    6,171.81/8,519.91 = 3,936.75/x
  3. Step 3: Cross multiply
    6,171.81x = 8,519.91 × 3,936.75
  4. Step 4: Simplify right side
    6,171.81x = 33,540,755.69
  5. Step 5: Solve for x
    x = 33,540,755.69/6,171.81
  6. Step 6: Final answer
    x = 5,434.51

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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.