Home / 2,022.42-2,791.20-1,138.39

Finding the Fourth Proportional to 2,022.42, 2,791.20 and 1,138.39

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Solution

The fourth proportional to 2,022.42, 2,791.20 and 1,138.39 is: 1,571.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,022.42 : 2,791.20 = 1,138.39 : x
  2. Step 2: Convert to fraction form
    2,022.42/2,791.20 = 1,138.39/x
  3. Step 3: Cross multiply
    2,022.42x = 2,791.20 × 1,138.39
  4. Step 4: Simplify right side
    2,022.42x = 3,177,475.23
  5. Step 5: Solve for x
    x = 3,177,475.23/2,022.42
  6. Step 6: Final answer
    x = 1,571.13

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Half scale
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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.