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Finding the Fourth Proportional to 2,640.37, 3,640.41 and 1,694.49

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Solution

The fourth proportional to 2,640.37, 3,640.41 and 1,694.49 is: 2,336.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640.37 : 3,640.41 = 1,694.49 : x
  2. Step 2: Convert to fraction form
    2,640.37/3,640.41 = 1,694.49/x
  3. Step 3: Cross multiply
    2,640.37x = 3,640.41 × 1,694.49
  4. Step 4: Simplify right side
    2,640.37x = 6,168,648.26
  5. Step 5: Solve for x
    x = 6,168,648.26/2,640.37
  6. Step 6: Final answer
    x = 2,336.28

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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.