Home / 3,880.58-5,355.14-2,112.17

Finding the Fourth Proportional to 3,880.58, 5,355.14 and 2,112.17

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Solution

The fourth proportional to 3,880.58, 5,355.14 and 2,112.17 is: 2,914.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.58 : 5,355.14 = 2,112.17 : x
  2. Step 2: Convert to fraction form
    3,880.58/5,355.14 = 2,112.17/x
  3. Step 3: Cross multiply
    3,880.58x = 5,355.14 × 2,112.17
  4. Step 4: Simplify right side
    3,880.58x = 11,310,928.72
  5. Step 5: Solve for x
    x = 11,310,928.72/3,880.58
  6. Step 6: Final answer
    x = 2,914.76

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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.