Home / 2,161.92-3,236.76-1,956.88

Finding the Fourth Proportional to 2,161.92, 3,236.76 and 1,956.88

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Solution

The fourth proportional to 2,161.92, 3,236.76 and 1,956.88 is: 2,929.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.92 : 3,236.76 = 1,956.88 : x
  2. Step 2: Convert to fraction form
    2,161.92/3,236.76 = 1,956.88/x
  3. Step 3: Cross multiply
    2,161.92x = 3,236.76 × 1,956.88
  4. Step 4: Simplify right side
    2,161.92x = 6,333,950.91
  5. Step 5: Solve for x
    x = 6,333,950.91/2,161.92
  6. Step 6: Final answer
    x = 2,929.78

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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.