Home / 3,880.72-5,355.42-2,287.44

Finding the Fourth Proportional to 3,880.72, 5,355.42 and 2,287.44

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Solution

The fourth proportional to 3,880.72, 5,355.42 and 2,287.44 is: 3,156.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.72 : 5,355.42 = 2,287.44 : x
  2. Step 2: Convert to fraction form
    3,880.72/5,355.42 = 2,287.44/x
  3. Step 3: Cross multiply
    3,880.72x = 5,355.42 × 2,287.44
  4. Step 4: Simplify right side
    3,880.72x = 12,250,201.92
  5. Step 5: Solve for x
    x = 12,250,201.92/3,880.72
  6. Step 6: Final answer
    x = 3,156.68

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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.