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Finding the Fourth Proportional to 3,902.76, 5,857.08 and 2,865.48

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Solution

The fourth proportional to 3,902.76, 5,857.08 and 2,865.48 is: 4,300.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.76 : 5,857.08 = 2,865.48 : x
  2. Step 2: Convert to fraction form
    3,902.76/5,857.08 = 2,865.48/x
  3. Step 3: Cross multiply
    3,902.76x = 5,857.08 × 2,865.48
  4. Step 4: Simplify right side
    3,902.76x = 16,783,345.60
  5. Step 5: Solve for x
    x = 16,783,345.60/3,902.76
  6. Step 6: Final answer
    x = 4,300.38

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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.