Home / 1,837.70-2,757.45-1,398.80

Finding the Fourth Proportional to 1,837.70, 2,757.45 and 1,398.80

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Solution

The fourth proportional to 1,837.70, 2,757.45 and 1,398.80 is: 2,098.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,837.70 : 2,757.45 = 1,398.80 : x
  2. Step 2: Convert to fraction form
    1,837.70/2,757.45 = 1,398.80/x
  3. Step 3: Cross multiply
    1,837.70x = 2,757.45 × 1,398.80
  4. Step 4: Simplify right side
    1,837.70x = 3,857,121.06
  5. Step 5: Solve for x
    x = 3,857,121.06/1,837.70
  6. Step 6: Final answer
    x = 2,098.89

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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.