Home / 2,788.10-4,198.45-2,062.78

Finding the Fourth Proportional to 2,788.10, 4,198.45 and 2,062.78

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Solution

The fourth proportional to 2,788.10, 4,198.45 and 2,062.78 is: 3,106.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788.10 : 4,198.45 = 2,062.78 : x
  2. Step 2: Convert to fraction form
    2,788.10/4,198.45 = 2,062.78/x
  3. Step 3: Cross multiply
    2,788.10x = 4,198.45 × 2,062.78
  4. Step 4: Simplify right side
    2,788.10x = 8,660,478.69
  5. Step 5: Solve for x
    x = 8,660,478.69/2,788.10
  6. Step 6: Final answer
    x = 3,106.23

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.