Home / 3,788.28-5,228.24-2,109.83

Finding the Fourth Proportional to 3,788.28, 5,228.24 and 2,109.83

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Solution

The fourth proportional to 3,788.28, 5,228.24 and 2,109.83 is: 2,911.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,788.28 : 5,228.24 = 2,109.83 : x
  2. Step 2: Convert to fraction form
    3,788.28/5,228.24 = 2,109.83/x
  3. Step 3: Cross multiply
    3,788.28x = 5,228.24 × 2,109.83
  4. Step 4: Simplify right side
    3,788.28x = 11,030,660.91
  5. Step 5: Solve for x
    x = 11,030,660.91/3,788.28
  6. Step 6: Final answer
    x = 2,911.79

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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.