Home / 3,723.75-5,137.89-2,151.87

Finding the Fourth Proportional to 3,723.75, 5,137.89 and 2,151.87

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Solution

The fourth proportional to 3,723.75, 5,137.89 and 2,151.87 is: 2,969.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,723.75 : 5,137.89 = 2,151.87 : x
  2. Step 2: Convert to fraction form
    3,723.75/5,137.89 = 2,151.87/x
  3. Step 3: Cross multiply
    3,723.75x = 5,137.89 × 2,151.87
  4. Step 4: Simplify right side
    3,723.75x = 11,056,071.35
  5. Step 5: Solve for x
    x = 11,056,071.35/3,723.75
  6. Step 6: Final answer
    x = 2,969.07

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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.