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Finding the Fourth Proportional to 1,996.76, 2,755.49 and 1,112.57

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Solution

The fourth proportional to 1,996.76, 2,755.49 and 1,112.57 is: 1,535.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,996.76 : 2,755.49 = 1,112.57 : x
  2. Step 2: Convert to fraction form
    1,996.76/2,755.49 = 1,112.57/x
  3. Step 3: Cross multiply
    1,996.76x = 2,755.49 × 1,112.57
  4. Step 4: Simplify right side
    1,996.76x = 3,065,676.84
  5. Step 5: Solve for x
    x = 3,065,676.84/1,996.76
  6. Step 6: Final answer
    x = 1,535.33

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Double scale
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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.