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Finding the Fourth Proportional to 4,918.72, 7,380.11 and 3,609.16

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Solution

The fourth proportional to 4,918.72, 7,380.11 and 3,609.16 is: 5,415.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,918.72 : 7,380.11 = 3,609.16 : x
  2. Step 2: Convert to fraction form
    4,918.72/7,380.11 = 3,609.16/x
  3. Step 3: Cross multiply
    4,918.72x = 7,380.11 × 3,609.16
  4. Step 4: Simplify right side
    4,918.72x = 26,635,942.86
  5. Step 5: Solve for x
    x = 26,635,942.86/4,918.72
  6. Step 6: Final answer
    x = 5,415.22

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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.