Home / 2,724.71-4,092.53-2,109.78

Finding the Fourth Proportional to 2,724.71, 4,092.53 and 2,109.78

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Solution

The fourth proportional to 2,724.71, 4,092.53 and 2,109.78 is: 3,168.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,724.71 : 4,092.53 = 2,109.78 : x
  2. Step 2: Convert to fraction form
    2,724.71/4,092.53 = 2,109.78/x
  3. Step 3: Cross multiply
    2,724.71x = 4,092.53 × 2,109.78
  4. Step 4: Simplify right side
    2,724.71x = 8,634,327.39
  5. Step 5: Solve for x
    x = 8,634,327.39/2,724.71
  6. Step 6: Final answer
    x = 3,168.90

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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.