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Finding the Fourth Proportional to 2,747.44, 4,121.20 and 898.54

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Solution

The fourth proportional to 2,747.44, 4,121.20 and 898.54 is: 1,347.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,747.44 : 4,121.20 = 898.54 : x
  2. Step 2: Convert to fraction form
    2,747.44/4,121.20 = 898.54/x
  3. Step 3: Cross multiply
    2,747.44x = 4,121.20 × 898.54
  4. Step 4: Simplify right side
    2,747.44x = 3,703,063.05
  5. Step 5: Solve for x
    x = 3,703,063.05/2,747.44
  6. Step 6: Final answer
    x = 1,347.82

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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.