Home / 3,881.44-5,356.20-2,112.94

Finding the Fourth Proportional to 3,881.44, 5,356.20 and 2,112.94

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Solution

The fourth proportional to 3,881.44, 5,356.20 and 2,112.94 is: 2,915.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.44 : 5,356.20 = 2,112.94 : x
  2. Step 2: Convert to fraction form
    3,881.44/5,356.20 = 2,112.94/x
  3. Step 3: Cross multiply
    3,881.44x = 5,356.20 × 2,112.94
  4. Step 4: Simplify right side
    3,881.44x = 11,317,329.23
  5. Step 5: Solve for x
    x = 11,317,329.23/3,881.44
  6. Step 6: Final answer
    x = 2,915.76

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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.