Home / 3,723.79-5,138.51-2,130.11

Finding the Fourth Proportional to 3,723.79, 5,138.51 and 2,130.11

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Solution

The fourth proportional to 3,723.79, 5,138.51 and 2,130.11 is: 2,939.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,723.79 : 5,138.51 = 2,130.11 : x
  2. Step 2: Convert to fraction form
    3,723.79/5,138.51 = 2,130.11/x
  3. Step 3: Cross multiply
    3,723.79x = 5,138.51 × 2,130.11
  4. Step 4: Simplify right side
    3,723.79x = 10,945,593.73
  5. Step 5: Solve for x
    x = 10,945,593.73/3,723.79
  6. Step 6: Final answer
    x = 2,939.37

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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.