Home / 3,327.18-4,990.16-861.84

Finding the Fourth Proportional to 3,327.18, 4,990.16 and 861.84

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Solution

The fourth proportional to 3,327.18, 4,990.16 and 861.84 is: 1,292.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,327.18 : 4,990.16 = 861.84 : x
  2. Step 2: Convert to fraction form
    3,327.18/4,990.16 = 861.84/x
  3. Step 3: Cross multiply
    3,327.18x = 4,990.16 × 861.84
  4. Step 4: Simplify right side
    3,327.18x = 4,300,731.97
  5. Step 5: Solve for x
    x = 4,300,731.97/3,327.18
  6. Step 6: Final answer
    x = 1,292.61

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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.