Home / 7,982.34-11,965.77-3,821.28

Finding the Fourth Proportional to 7,982.34, 11,965.77 and 3,821.28

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Solution

The fourth proportional to 7,982.34, 11,965.77 and 3,821.28 is: 5,728.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,982.34 : 11,965.77 = 3,821.28 : x
  2. Step 2: Convert to fraction form
    7,982.34/11,965.77 = 3,821.28/x
  3. Step 3: Cross multiply
    7,982.34x = 11,965.77 × 3,821.28
  4. Step 4: Simplify right side
    7,982.34x = 45,724,557.59
  5. Step 5: Solve for x
    x = 45,724,557.59/7,982.34
  6. Step 6: Final answer
    x = 5,728.21

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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.