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Finding the Fourth Proportional to 1,469.49, 2,027.94 and 806.39

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Solution

The fourth proportional to 1,469.49, 2,027.94 and 806.39 is: 1,112.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,469.49 : 2,027.94 = 806.39 : x
  2. Step 2: Convert to fraction form
    1,469.49/2,027.94 = 806.39/x
  3. Step 3: Cross multiply
    1,469.49x = 2,027.94 × 806.39
  4. Step 4: Simplify right side
    1,469.49x = 1,635,304.98
  5. Step 5: Solve for x
    x = 1,635,304.98/1,469.49
  6. Step 6: Final answer
    x = 1,112.84

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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.