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Finding the Fourth Proportional to 2,735.78, 3,774.20 and 1,789.92

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Solution

The fourth proportional to 2,735.78, 3,774.20 and 1,789.92 is: 2,469.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,735.78 : 3,774.20 = 1,789.92 : x
  2. Step 2: Convert to fraction form
    2,735.78/3,774.20 = 1,789.92/x
  3. Step 3: Cross multiply
    2,735.78x = 3,774.20 × 1,789.92
  4. Step 4: Simplify right side
    2,735.78x = 6,755,516.06
  5. Step 5: Solve for x
    x = 6,755,516.06/2,735.78
  6. Step 6: Final answer
    x = 2,469.32

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1.5x scale

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.