Home / 5,791.12-7,991.73-3,138.58

Finding the Fourth Proportional to 5,791.12, 7,991.73 and 3,138.58

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Solution

The fourth proportional to 5,791.12, 7,991.73 and 3,138.58 is: 4,331.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,791.12 : 7,991.73 = 3,138.58 : x
  2. Step 2: Convert to fraction form
    5,791.12/7,991.73 = 3,138.58/x
  3. Step 3: Cross multiply
    5,791.12x = 7,991.73 × 3,138.58
  4. Step 4: Simplify right side
    5,791.12x = 25,082,683.94
  5. Step 5: Solve for x
    x = 25,082,683.94/5,791.12
  6. Step 6: Final answer
    x = 4,331.23

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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.