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Finding the Fourth Proportional to 3,898.96, 5,378.76 and 2,242

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Solution

The fourth proportional to 3,898.96, 5,378.76 and 2,242 is: 3,092.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.96 : 5,378.76 = 2,242 : x
  2. Step 2: Convert to fraction form
    3,898.96/5,378.76 = 2,242/x
  3. Step 3: Cross multiply
    3,898.96x = 5,378.76 × 2,242
  4. Step 4: Simplify right side
    3,898.96x = 12,059,179.92
  5. Step 5: Solve for x
    x = 12,059,179.92/3,898.96
  6. Step 6: Final answer
    x = 3,092.92

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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.