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Finding the Fourth Proportional to 2,874.54, 3,968.22 and 1,879.86

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Solution

The fourth proportional to 2,874.54, 3,968.22 and 1,879.86 is: 2,595.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,874.54 : 3,968.22 = 1,879.86 : x
  2. Step 2: Convert to fraction form
    2,874.54/3,968.22 = 1,879.86/x
  3. Step 3: Cross multiply
    2,874.54x = 3,968.22 × 1,879.86
  4. Step 4: Simplify right side
    2,874.54x = 7,459,698.05
  5. Step 5: Solve for x
    x = 7,459,698.05/2,874.54
  6. Step 6: Final answer
    x = 2,595.09

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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.