Home / 2,022.90-2,791.36-1,138.65

Finding the Fourth Proportional to 2,022.90, 2,791.36 and 1,138.65

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Solution

The fourth proportional to 2,022.90, 2,791.36 and 1,138.65 is: 1,571.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,022.90 : 2,791.36 = 1,138.65 : x
  2. Step 2: Convert to fraction form
    2,022.90/2,791.36 = 1,138.65/x
  3. Step 3: Cross multiply
    2,022.90x = 2,791.36 × 1,138.65
  4. Step 4: Simplify right side
    2,022.90x = 3,178,382.06
  5. Step 5: Solve for x
    x = 3,178,382.06/2,022.90
  6. Step 6: Final answer
    x = 1,571.20

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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.