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Finding the Fourth Proportional to 2,469.72, 3,412.62 and 2,379

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Solution

The fourth proportional to 2,469.72, 3,412.62 and 2,379 is: 3,287.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,469.72 : 3,412.62 = 2,379 : x
  2. Step 2: Convert to fraction form
    2,469.72/3,412.62 = 2,379/x
  3. Step 3: Cross multiply
    2,469.72x = 3,412.62 × 2,379
  4. Step 4: Simplify right side
    2,469.72x = 8,118,622.98
  5. Step 5: Solve for x
    x = 8,118,622.98/2,469.72
  6. Step 6: Final answer
    x = 3,287.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.