Home / 3,880.43-5,354.99-2,112.05

Finding the Fourth Proportional to 3,880.43, 5,354.99 and 2,112.05

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Solution

The fourth proportional to 3,880.43, 5,354.99 and 2,112.05 is: 2,914.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.43 : 5,354.99 = 2,112.05 : x
  2. Step 2: Convert to fraction form
    3,880.43/5,354.99 = 2,112.05/x
  3. Step 3: Cross multiply
    3,880.43x = 5,354.99 × 2,112.05
  4. Step 4: Simplify right side
    3,880.43x = 11,310,005.22
  5. Step 5: Solve for x
    x = 11,310,005.22/3,880.43
  6. Step 6: Final answer
    x = 2,914.63

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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.