Home / 2,788.35-4,179.78-1,399.65

Finding the Fourth Proportional to 2,788.35, 4,179.78 and 1,399.65

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Solution

The fourth proportional to 2,788.35, 4,179.78 and 1,399.65 is: 2,098.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788.35 : 4,179.78 = 1,399.65 : x
  2. Step 2: Convert to fraction form
    2,788.35/4,179.78 = 1,399.65/x
  3. Step 3: Cross multiply
    2,788.35x = 4,179.78 × 1,399.65
  4. Step 4: Simplify right side
    2,788.35x = 5,850,229.08
  5. Step 5: Solve for x
    x = 5,850,229.08/2,788.35
  6. Step 6: Final answer
    x = 2,098.10

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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.