Home / 2,989.46-4,481.31-1,601.78

Finding the Fourth Proportional to 2,989.46, 4,481.31 and 1,601.78

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Solution

The fourth proportional to 2,989.46, 4,481.31 and 1,601.78 is: 2,401.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.46 : 4,481.31 = 1,601.78 : x
  2. Step 2: Convert to fraction form
    2,989.46/4,481.31 = 1,601.78/x
  3. Step 3: Cross multiply
    2,989.46x = 4,481.31 × 1,601.78
  4. Step 4: Simplify right side
    2,989.46x = 7,178,072.73
  5. Step 5: Solve for x
    x = 7,178,072.73/2,989.46
  6. Step 6: Final answer
    x = 2,401.13

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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.