Home / 2,998.22-4,138.70-1,879.61

Finding the Fourth Proportional to 2,998.22, 4,138.70 and 1,879.61

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Solution

The fourth proportional to 2,998.22, 4,138.70 and 1,879.61 is: 2,594.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,998.22 : 4,138.70 = 1,879.61 : x
  2. Step 2: Convert to fraction form
    2,998.22/4,138.70 = 1,879.61/x
  3. Step 3: Cross multiply
    2,998.22x = 4,138.70 × 1,879.61
  4. Step 4: Simplify right side
    2,998.22x = 7,779,111.82
  5. Step 5: Solve for x
    x = 7,779,111.82/2,998.22
  6. Step 6: Final answer
    x = 2,594.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.