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Finding the Fourth Proportional to 1,893.78, 2,839.45 and 797.85

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Solution

The fourth proportional to 1,893.78, 2,839.45 and 797.85 is: 1,196.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,893.78 : 2,839.45 = 797.85 : x
  2. Step 2: Convert to fraction form
    1,893.78/2,839.45 = 797.85/x
  3. Step 3: Cross multiply
    1,893.78x = 2,839.45 × 797.85
  4. Step 4: Simplify right side
    1,893.78x = 2,265,455.18
  5. Step 5: Solve for x
    x = 2,265,455.18/1,893.78
  6. Step 6: Final answer
    x = 1,196.26

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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.