Home / 1,638.43-2,262.62-1,190.97

Finding the Fourth Proportional to 1,638.43, 2,262.62 and 1,190.97

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Solution

The fourth proportional to 1,638.43, 2,262.62 and 1,190.97 is: 1,644.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.43 : 2,262.62 = 1,190.97 : x
  2. Step 2: Convert to fraction form
    1,638.43/2,262.62 = 1,190.97/x
  3. Step 3: Cross multiply
    1,638.43x = 2,262.62 × 1,190.97
  4. Step 4: Simplify right side
    1,638.43x = 2,694,715.52
  5. Step 5: Solve for x
    x = 2,694,715.52/1,638.43
  6. Step 6: Final answer
    x = 1,644.70

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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.