Home / 3,880.52-5,355.04-2,112.12

Finding the Fourth Proportional to 3,880.52, 5,355.04 and 2,112.12

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Solution

The fourth proportional to 3,880.52, 5,355.04 and 2,112.12 is: 2,914.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.52 : 5,355.04 = 2,112.12 : x
  2. Step 2: Convert to fraction form
    3,880.52/5,355.04 = 2,112.12/x
  3. Step 3: Cross multiply
    3,880.52x = 5,355.04 × 2,112.12
  4. Step 4: Simplify right side
    3,880.52x = 11,310,487.08
  5. Step 5: Solve for x
    x = 11,310,487.08/3,880.52
  6. Step 6: Final answer
    x = 2,914.68

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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.