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Finding the Fourth Proportional to 1,837.69, 2,757.75 and 863.87

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Solution

The fourth proportional to 1,837.69, 2,757.75 and 863.87 is: 1,296.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,837.69 : 2,757.75 = 863.87 : x
  2. Step 2: Convert to fraction form
    1,837.69/2,757.75 = 863.87/x
  3. Step 3: Cross multiply
    1,837.69x = 2,757.75 × 863.87
  4. Step 4: Simplify right side
    1,837.69x = 2,382,320.46
  5. Step 5: Solve for x
    x = 2,382,320.46/1,837.69
  6. Step 6: Final answer
    x = 1,296.37

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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.