Home / 3,880.89-5,355.54-2,112.44

Finding the Fourth Proportional to 3,880.89, 5,355.54 and 2,112.44

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Solution

The fourth proportional to 3,880.89, 5,355.54 and 2,112.44 is: 2,915.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.89 : 5,355.54 = 2,112.44 : x
  2. Step 2: Convert to fraction form
    3,880.89/5,355.54 = 2,112.44/x
  3. Step 3: Cross multiply
    3,880.89x = 5,355.54 × 2,112.44
  4. Step 4: Simplify right side
    3,880.89x = 11,313,230.14
  5. Step 5: Solve for x
    x = 11,313,230.14/3,880.89
  6. Step 6: Final answer
    x = 2,915.11

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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.