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Finding the Fourth Proportional to 2,408.77, 3,613.15 and 677.39

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Solution

The fourth proportional to 2,408.77, 3,613.15 and 677.39 is: 1,016.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,408.77 : 3,613.15 = 677.39 : x
  2. Step 2: Convert to fraction form
    2,408.77/3,613.15 = 677.39/x
  3. Step 3: Cross multiply
    2,408.77x = 3,613.15 × 677.39
  4. Step 4: Simplify right side
    2,408.77x = 2,447,521.56
  5. Step 5: Solve for x
    x = 2,447,521.56/2,408.77
  6. Step 6: Final answer
    x = 1,016.09

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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.