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Finding the Fourth Proportional to 2,640.54, 3,963.24 and 1,342.92

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Solution

The fourth proportional to 2,640.54, 3,963.24 and 1,342.92 is: 2,015.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640.54 : 3,963.24 = 1,342.92 : x
  2. Step 2: Convert to fraction form
    2,640.54/3,963.24 = 1,342.92/x
  3. Step 3: Cross multiply
    2,640.54x = 3,963.24 × 1,342.92
  4. Step 4: Simplify right side
    2,640.54x = 5,322,314.26
  5. Step 5: Solve for x
    x = 5,322,314.26/2,640.54
  6. Step 6: Final answer
    x = 2,015.62

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1.5x scale

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.