Home / 3,709.70-5,119.40-2,137.79

Finding the Fourth Proportional to 3,709.70, 5,119.40 and 2,137.79

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Solution

The fourth proportional to 3,709.70, 5,119.40 and 2,137.79 is: 2,950.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,709.70 : 5,119.40 = 2,137.79 : x
  2. Step 2: Convert to fraction form
    3,709.70/5,119.40 = 2,137.79/x
  3. Step 3: Cross multiply
    3,709.70x = 5,119.40 × 2,137.79
  4. Step 4: Simplify right side
    3,709.70x = 10,944,220.27
  5. Step 5: Solve for x
    x = 10,944,220.27/3,709.70
  6. Step 6: Final answer
    x = 2,950.16

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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.