Home / 2,022.72-2,791.20-1,138.32

Finding the Fourth Proportional to 2,022.72, 2,791.20 and 1,138.32

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Solution

The fourth proportional to 2,022.72, 2,791.20 and 1,138.32 is: 1,570.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,022.72 : 2,791.20 = 1,138.32 : x
  2. Step 2: Convert to fraction form
    2,022.72/2,791.20 = 1,138.32/x
  3. Step 3: Cross multiply
    2,022.72x = 2,791.20 × 1,138.32
  4. Step 4: Simplify right side
    2,022.72x = 3,177,278.78
  5. Step 5: Solve for x
    x = 3,177,278.78/2,022.72
  6. Step 6: Final answer
    x = 1,570.80

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.