Home / 3,880.91-5,353.39-2,817.44

Finding the Fourth Proportional to 3,880.91, 5,353.39 and 2,817.44

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Solution

The fourth proportional to 3,880.91, 5,353.39 and 2,817.44 is: 3,886.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.91 : 5,353.39 = 2,817.44 : x
  2. Step 2: Convert to fraction form
    3,880.91/5,353.39 = 2,817.44/x
  3. Step 3: Cross multiply
    3,880.91x = 5,353.39 × 2,817.44
  4. Step 4: Simplify right side
    3,880.91x = 15,082,855.12
  5. Step 5: Solve for x
    x = 15,082,855.12/3,880.91
  6. Step 6: Final answer
    x = 3,886.42

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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.