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Finding the Fourth Proportional to 2,108.34, 3,161.48 and 792.32

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Solution

The fourth proportional to 2,108.34, 3,161.48 and 792.32 is: 1,188.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.34 : 3,161.48 = 792.32 : x
  2. Step 2: Convert to fraction form
    2,108.34/3,161.48 = 792.32/x
  3. Step 3: Cross multiply
    2,108.34x = 3,161.48 × 792.32
  4. Step 4: Simplify right side
    2,108.34x = 2,504,884.06
  5. Step 5: Solve for x
    x = 2,504,884.06/2,108.34
  6. Step 6: Final answer
    x = 1,188.08

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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.