Home / 3,791.05-5,231.57-2,112.45

Finding the Fourth Proportional to 3,791.05, 5,231.57 and 2,112.45

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Solution

The fourth proportional to 3,791.05, 5,231.57 and 2,112.45 is: 2,915.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,791.05 : 5,231.57 = 2,112.45 : x
  2. Step 2: Convert to fraction form
    3,791.05/5,231.57 = 2,112.45/x
  3. Step 3: Cross multiply
    3,791.05x = 5,231.57 × 2,112.45
  4. Step 4: Simplify right side
    3,791.05x = 11,051,430.05
  5. Step 5: Solve for x
    x = 11,051,430.05/3,791.05
  6. Step 6: Final answer
    x = 2,915.14

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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.