Home / 2,720.70-4,071.99-2,067.78

Finding the Fourth Proportional to 2,720.70, 4,071.99 and 2,067.78

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Solution

The fourth proportional to 2,720.70, 4,071.99 and 2,067.78 is: 3,094.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.70 : 4,071.99 = 2,067.78 : x
  2. Step 2: Convert to fraction form
    2,720.70/4,071.99 = 2,067.78/x
  3. Step 3: Cross multiply
    2,720.70x = 4,071.99 × 2,067.78
  4. Step 4: Simplify right side
    2,720.70x = 8,419,979.48
  5. Step 5: Solve for x
    x = 8,419,979.48/2,720.70
  6. Step 6: Final answer
    x = 3,094.78

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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.