Home / 3,408.21-5,107.41-1,678.05

Finding the Fourth Proportional to 3,408.21, 5,107.41 and 1,678.05

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Solution

The fourth proportional to 3,408.21, 5,107.41 and 1,678.05 is: 2,514.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,408.21 : 5,107.41 = 1,678.05 : x
  2. Step 2: Convert to fraction form
    3,408.21/5,107.41 = 1,678.05/x
  3. Step 3: Cross multiply
    3,408.21x = 5,107.41 × 1,678.05
  4. Step 4: Simplify right side
    3,408.21x = 8,570,489.35
  5. Step 5: Solve for x
    x = 8,570,489.35/3,408.21
  6. Step 6: Final answer
    x = 2,514.66

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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.