Home / 3,723.41-5,137.99-2,129.74

Finding the Fourth Proportional to 3,723.41, 5,137.99 and 2,129.74

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Solution

The fourth proportional to 3,723.41, 5,137.99 and 2,129.74 is: 2,938.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,723.41 : 5,137.99 = 2,129.74 : x
  2. Step 2: Convert to fraction form
    3,723.41/5,137.99 = 2,129.74/x
  3. Step 3: Cross multiply
    3,723.41x = 5,137.99 × 2,129.74
  4. Step 4: Simplify right side
    3,723.41x = 10,942,564.65
  5. Step 5: Solve for x
    x = 10,942,564.65/3,723.41
  6. Step 6: Final answer
    x = 2,938.85

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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.