Home / 2,138.91-3,208.88-1,043.03

Finding the Fourth Proportional to 2,138.91, 3,208.88 and 1,043.03

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Solution

The fourth proportional to 2,138.91, 3,208.88 and 1,043.03 is: 1,564.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.91 : 3,208.88 = 1,043.03 : x
  2. Step 2: Convert to fraction form
    2,138.91/3,208.88 = 1,043.03/x
  3. Step 3: Cross multiply
    2,138.91x = 3,208.88 × 1,043.03
  4. Step 4: Simplify right side
    2,138.91x = 3,346,936.85
  5. Step 5: Solve for x
    x = 3,346,936.85/2,138.91
  6. Step 6: Final answer
    x = 1,564.79

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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.