Home / 3,519.36-4,857.20-2,122.56

Finding the Fourth Proportional to 3,519.36, 4,857.20 and 2,122.56

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Solution

The fourth proportional to 3,519.36, 4,857.20 and 2,122.56 is: 2,929.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,519.36 : 4,857.20 = 2,122.56 : x
  2. Step 2: Convert to fraction form
    3,519.36/4,857.20 = 2,122.56/x
  3. Step 3: Cross multiply
    3,519.36x = 4,857.20 × 2,122.56
  4. Step 4: Simplify right side
    3,519.36x = 10,309,698.43
  5. Step 5: Solve for x
    x = 10,309,698.43/3,519.36
  6. Step 6: Final answer
    x = 2,929.42

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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.