Home / 2,138.24-3,199.76-1,553.92

Finding the Fourth Proportional to 2,138.24, 3,199.76 and 1,553.92

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Solution

The fourth proportional to 2,138.24, 3,199.76 and 1,553.92 is: 2,325.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.24 : 3,199.76 = 1,553.92 : x
  2. Step 2: Convert to fraction form
    2,138.24/3,199.76 = 1,553.92/x
  3. Step 3: Cross multiply
    2,138.24x = 3,199.76 × 1,553.92
  4. Step 4: Simplify right side
    2,138.24x = 4,972,171.06
  5. Step 5: Solve for x
    x = 4,972,171.06/2,138.24
  6. Step 6: Final answer
    x = 2,325.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.