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Finding the Fourth Proportional to 2,408.56, 3,613.08 and 869.44

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Solution

The fourth proportional to 2,408.56, 3,613.08 and 869.44 is: 1,304.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,408.56 : 3,613.08 = 869.44 : x
  2. Step 2: Convert to fraction form
    2,408.56/3,613.08 = 869.44/x
  3. Step 3: Cross multiply
    2,408.56x = 3,613.08 × 869.44
  4. Step 4: Simplify right side
    2,408.56x = 3,141,356.28
  5. Step 5: Solve for x
    x = 3,141,356.28/2,408.56
  6. Step 6: Final answer
    x = 1,304.25

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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.