Home / 3,991.29-5,519.79-3,493.14

Finding the Fourth Proportional to 3,991.29, 5,519.79 and 3,493.14

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Solution

The fourth proportional to 3,991.29, 5,519.79 and 3,493.14 is: 4,830.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.29 : 5,519.79 = 3,493.14 : x
  2. Step 2: Convert to fraction form
    3,991.29/5,519.79 = 3,493.14/x
  3. Step 3: Cross multiply
    3,991.29x = 5,519.79 × 3,493.14
  4. Step 4: Simplify right side
    3,991.29x = 19,281,399.24
  5. Step 5: Solve for x
    x = 19,281,399.24/3,991.29
  6. Step 6: Final answer
    x = 4,830.87

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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.