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Finding the Fourth Proportional to 1,893.74, 2,613.22 and 1,185.55

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Solution

The fourth proportional to 1,893.74, 2,613.22 and 1,185.55 is: 1,635.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,893.74 : 2,613.22 = 1,185.55 : x
  2. Step 2: Convert to fraction form
    1,893.74/2,613.22 = 1,185.55/x
  3. Step 3: Cross multiply
    1,893.74x = 2,613.22 × 1,185.55
  4. Step 4: Simplify right side
    1,893.74x = 3,098,102.97
  5. Step 5: Solve for x
    x = 3,098,102.97/1,893.74
  6. Step 6: Final answer
    x = 1,635.97

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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.