Home / 3,982.84-5,961.48-2,129.32

Finding the Fourth Proportional to 3,982.84, 5,961.48 and 2,129.32

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Solution

The fourth proportional to 3,982.84, 5,961.48 and 2,129.32 is: 3,187.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982.84 : 5,961.48 = 2,129.32 : x
  2. Step 2: Convert to fraction form
    3,982.84/5,961.48 = 2,129.32/x
  3. Step 3: Cross multiply
    3,982.84x = 5,961.48 × 2,129.32
  4. Step 4: Simplify right side
    3,982.84x = 12,693,898.59
  5. Step 5: Solve for x
    x = 12,693,898.59/3,982.84
  6. Step 6: Final answer
    x = 3,187.15

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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.