Home / 3,719.72-5,131.10-2,226.79

Finding the Fourth Proportional to 3,719.72, 5,131.10 and 2,226.79

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Solution

The fourth proportional to 3,719.72, 5,131.10 and 2,226.79 is: 3,071.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,719.72 : 5,131.10 = 2,226.79 : x
  2. Step 2: Convert to fraction form
    3,719.72/5,131.10 = 2,226.79/x
  3. Step 3: Cross multiply
    3,719.72x = 5,131.10 × 2,226.79
  4. Step 4: Simplify right side
    3,719.72x = 11,425,881.62
  5. Step 5: Solve for x
    x = 11,425,881.62/3,719.72
  6. Step 6: Final answer
    x = 3,071.70

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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.