Home / 3,709.70-5,119.97-2,218.78

Finding the Fourth Proportional to 3,709.70, 5,119.97 and 2,218.78

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Solution

The fourth proportional to 3,709.70, 5,119.97 and 2,218.78 is: 3,062.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,709.70 : 5,119.97 = 2,218.78 : x
  2. Step 2: Convert to fraction form
    3,709.70/5,119.97 = 2,218.78/x
  3. Step 3: Cross multiply
    3,709.70x = 5,119.97 × 2,218.78
  4. Step 4: Simplify right side
    3,709.70x = 11,360,087.04
  5. Step 5: Solve for x
    x = 11,360,087.04/3,709.70
  6. Step 6: Final answer
    x = 3,062.27

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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.