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Finding the Fourth Proportional to 4,942.48, 7,408.80 and 2,340.80

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Solution

The fourth proportional to 4,942.48, 7,408.80 and 2,340.80 is: 3,508.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,942.48 : 7,408.80 = 2,340.80 : x
  2. Step 2: Convert to fraction form
    4,942.48/7,408.80 = 2,340.80/x
  3. Step 3: Cross multiply
    4,942.48x = 7,408.80 × 2,340.80
  4. Step 4: Simplify right side
    4,942.48x = 17,342,519.04
  5. Step 5: Solve for x
    x = 17,342,519.04/4,942.48
  6. Step 6: Final answer
    x = 3,508.87

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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.