Home / 3,880.44-5,356.26-2,885.40

Finding the Fourth Proportional to 3,880.44, 5,356.26 and 2,885.40

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Solution

The fourth proportional to 3,880.44, 5,356.26 and 2,885.40 is: 3,982.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.44 : 5,356.26 = 2,885.40 : x
  2. Step 2: Convert to fraction form
    3,880.44/5,356.26 = 2,885.40/x
  3. Step 3: Cross multiply
    3,880.44x = 5,356.26 × 2,885.40
  4. Step 4: Simplify right side
    3,880.44x = 15,454,952.60
  5. Step 5: Solve for x
    x = 15,454,952.60/3,880.44
  6. Step 6: Final answer
    x = 3,982.78

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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.