Home / 3,857.70-5,789.68-2,192.88

Finding the Fourth Proportional to 3,857.70, 5,789.68 and 2,192.88

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Solution

The fourth proportional to 3,857.70, 5,789.68 and 2,192.88 is: 3,291.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.70 : 5,789.68 = 2,192.88 : x
  2. Step 2: Convert to fraction form
    3,857.70/5,789.68 = 2,192.88/x
  3. Step 3: Cross multiply
    3,857.70x = 5,789.68 × 2,192.88
  4. Step 4: Simplify right side
    3,857.70x = 12,696,073.48
  5. Step 5: Solve for x
    x = 12,696,073.48/3,857.70
  6. Step 6: Final answer
    x = 3,291.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.