Home / 2,481.31-3,719.20-1,994.70

Finding the Fourth Proportional to 2,481.31, 3,719.20 and 1,994.70

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Solution

The fourth proportional to 2,481.31, 3,719.20 and 1,994.70 is: 2,989.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,481.31 : 3,719.20 = 1,994.70 : x
  2. Step 2: Convert to fraction form
    2,481.31/3,719.20 = 1,994.70/x
  3. Step 3: Cross multiply
    2,481.31x = 3,719.20 × 1,994.70
  4. Step 4: Simplify right side
    2,481.31x = 7,418,688.24
  5. Step 5: Solve for x
    x = 7,418,688.24/2,481.31
  6. Step 6: Final answer
    x = 2,989.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.