Home / 2,779.13-4,169.91-1,219.48

Finding the Fourth Proportional to 2,779.13, 4,169.91 and 1,219.48

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Solution

The fourth proportional to 2,779.13, 4,169.91 and 1,219.48 is: 1,829.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,779.13 : 4,169.91 = 1,219.48 : x
  2. Step 2: Convert to fraction form
    2,779.13/4,169.91 = 1,219.48/x
  3. Step 3: Cross multiply
    2,779.13x = 4,169.91 × 1,219.48
  4. Step 4: Simplify right side
    2,779.13x = 5,085,121.85
  5. Step 5: Solve for x
    x = 5,085,121.85/2,779.13
  6. Step 6: Final answer
    x = 1,829.75

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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.