Home / 3,719.19-5,131.92-2,226.78

Finding the Fourth Proportional to 3,719.19, 5,131.92 and 2,226.78

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Solution

The fourth proportional to 3,719.19, 5,131.92 and 2,226.78 is: 3,072.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,719.19 : 5,131.92 = 2,226.78 : x
  2. Step 2: Convert to fraction form
    3,719.19/5,131.92 = 2,226.78/x
  3. Step 3: Cross multiply
    3,719.19x = 5,131.92 × 2,226.78
  4. Step 4: Simplify right side
    3,719.19x = 11,427,656.82
  5. Step 5: Solve for x
    x = 11,427,656.82/3,719.19
  6. Step 6: Final answer
    x = 3,072.62

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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.