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Finding the Fourth Proportional to 1,829.19, 2,743.78 and 855.97

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Solution

The fourth proportional to 1,829.19, 2,743.78 and 855.97 is: 1,283.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,829.19 : 2,743.78 = 855.97 : x
  2. Step 2: Convert to fraction form
    1,829.19/2,743.78 = 855.97/x
  3. Step 3: Cross multiply
    1,829.19x = 2,743.78 × 855.97
  4. Step 4: Simplify right side
    1,829.19x = 2,348,597.87
  5. Step 5: Solve for x
    x = 2,348,597.87/1,829.19
  6. Step 6: Final answer
    x = 1,283.96

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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.