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Finding the Fourth Proportional to 1,944.52, 2,912.10 and 1,213.18

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Solution

The fourth proportional to 1,944.52, 2,912.10 and 1,213.18 is: 1,816.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,944.52 : 2,912.10 = 1,213.18 : x
  2. Step 2: Convert to fraction form
    1,944.52/2,912.10 = 1,213.18/x
  3. Step 3: Cross multiply
    1,944.52x = 2,912.10 × 1,213.18
  4. Step 4: Simplify right side
    1,944.52x = 3,532,901.48
  5. Step 5: Solve for x
    x = 3,532,901.48/1,944.52
  6. Step 6: Final answer
    x = 1,816.85

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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.