Home / 3,778.11-5,213.97-2,206.71

Finding the Fourth Proportional to 3,778.11, 5,213.97 and 2,206.71

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Solution

The fourth proportional to 3,778.11, 5,213.97 and 2,206.71 is: 3,045.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.11 : 5,213.97 = 2,206.71 : x
  2. Step 2: Convert to fraction form
    3,778.11/5,213.97 = 2,206.71/x
  3. Step 3: Cross multiply
    3,778.11x = 5,213.97 × 2,206.71
  4. Step 4: Simplify right side
    3,778.11x = 11,505,719.74
  5. Step 5: Solve for x
    x = 11,505,719.74/3,778.11
  6. Step 6: Final answer
    x = 3,045.36

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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.