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Finding the Fourth Proportional to 3,808.32, 5,712.46 and 1,959.96

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Solution

The fourth proportional to 3,808.32, 5,712.46 and 1,959.96 is: 2,939.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,808.32 : 5,712.46 = 1,959.96 : x
  2. Step 2: Convert to fraction form
    3,808.32/5,712.46 = 1,959.96/x
  3. Step 3: Cross multiply
    3,808.32x = 5,712.46 × 1,959.96
  4. Step 4: Simplify right side
    3,808.32x = 11,196,193.10
  5. Step 5: Solve for x
    x = 11,196,193.10/3,808.32
  6. Step 6: Final answer
    x = 2,939.93

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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.