Home / 2,992.71-4,125.66-2,105.76

Finding the Fourth Proportional to 2,992.71, 4,125.66 and 2,105.76

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Solution

The fourth proportional to 2,992.71, 4,125.66 and 2,105.76 is: 2,902.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,992.71 : 4,125.66 = 2,105.76 : x
  2. Step 2: Convert to fraction form
    2,992.71/4,125.66 = 2,105.76/x
  3. Step 3: Cross multiply
    2,992.71x = 4,125.66 × 2,105.76
  4. Step 4: Simplify right side
    2,992.71x = 8,687,649.80
  5. Step 5: Solve for x
    x = 8,687,649.80/2,992.71
  6. Step 6: Final answer
    x = 2,902.94

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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.