Home / 3,903.81-5,388.39-2,226.12

Finding the Fourth Proportional to 3,903.81, 5,388.39 and 2,226.12

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Solution

The fourth proportional to 3,903.81, 5,388.39 and 2,226.12 is: 3,072.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,903.81 : 5,388.39 = 2,226.12 : x
  2. Step 2: Convert to fraction form
    3,903.81/5,388.39 = 2,226.12/x
  3. Step 3: Cross multiply
    3,903.81x = 5,388.39 × 2,226.12
  4. Step 4: Simplify right side
    3,903.81x = 11,995,202.75
  5. Step 5: Solve for x
    x = 11,995,202.75/3,903.81
  6. Step 6: Final answer
    x = 3,072.69

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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.