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Finding the Fourth Proportional to 2,022.48, 2,791.02 and 1,138.48

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Solution

The fourth proportional to 2,022.48, 2,791.02 and 1,138.48 is: 1,571.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,022.48 : 2,791.02 = 1,138.48 : x
  2. Step 2: Convert to fraction form
    2,022.48/2,791.02 = 1,138.48/x
  3. Step 3: Cross multiply
    2,022.48x = 2,791.02 × 1,138.48
  4. Step 4: Simplify right side
    2,022.48x = 3,177,520.45
  5. Step 5: Solve for x
    x = 3,177,520.45/2,022.48
  6. Step 6: Final answer
    x = 1,571.10

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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.