Home / 1,947.62-2,687.49-1,108.22

Finding the Fourth Proportional to 1,947.62, 2,687.49 and 1,108.22

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Solution

The fourth proportional to 1,947.62, 2,687.49 and 1,108.22 is: 1,529.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.62 : 2,687.49 = 1,108.22 : x
  2. Step 2: Convert to fraction form
    1,947.62/2,687.49 = 1,108.22/x
  3. Step 3: Cross multiply
    1,947.62x = 2,687.49 × 1,108.22
  4. Step 4: Simplify right side
    1,947.62x = 2,978,316.73
  5. Step 5: Solve for x
    x = 2,978,316.73/1,947.62
  6. Step 6: Final answer
    x = 1,529.21

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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.