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Finding the Fourth Proportional to 1,755.38, 2,629.19 and 1,283.96

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Solution

The fourth proportional to 1,755.38, 2,629.19 and 1,283.96 is: 1,923.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,755.38 : 2,629.19 = 1,283.96 : x
  2. Step 2: Convert to fraction form
    1,755.38/2,629.19 = 1,283.96/x
  3. Step 3: Cross multiply
    1,755.38x = 2,629.19 × 1,283.96
  4. Step 4: Simplify right side
    1,755.38x = 3,375,784.58
  5. Step 5: Solve for x
    x = 3,375,784.58/1,755.38
  6. Step 6: Final answer
    x = 1,923.10

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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.