Home / 3,911.91-5,398.44-2,119.38

Finding the Fourth Proportional to 3,911.91, 5,398.44 and 2,119.38

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Solution

The fourth proportional to 3,911.91, 5,398.44 and 2,119.38 is: 2,924.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.91 : 5,398.44 = 2,119.38 : x
  2. Step 2: Convert to fraction form
    3,911.91/5,398.44 = 2,119.38/x
  3. Step 3: Cross multiply
    3,911.91x = 5,398.44 × 2,119.38
  4. Step 4: Simplify right side
    3,911.91x = 11,441,345.77
  5. Step 5: Solve for x
    x = 11,441,345.77/3,911.91
  6. Step 6: Final answer
    x = 2,924.75

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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.