Home / 1,867.92-2,806.20-1,811.76

Finding the Fourth Proportional to 1,867.92, 2,806.20 and 1,811.76

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Solution

The fourth proportional to 1,867.92, 2,806.20 and 1,811.76 is: 2,721.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867.92 : 2,806.20 = 1,811.76 : x
  2. Step 2: Convert to fraction form
    1,867.92/2,806.20 = 1,811.76/x
  3. Step 3: Cross multiply
    1,867.92x = 2,806.20 × 1,811.76
  4. Step 4: Simplify right side
    1,867.92x = 5,084,160.91
  5. Step 5: Solve for x
    x = 5,084,160.91/1,867.92
  6. Step 6: Final answer
    x = 2,721.83

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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.