Home / 3,321.21-4,983.90-1,861.32

Finding the Fourth Proportional to 3,321.21, 4,983.90 and 1,861.32

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Solution

The fourth proportional to 3,321.21, 4,983.90 and 1,861.32 is: 2,793.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,321.21 : 4,983.90 = 1,861.32 : x
  2. Step 2: Convert to fraction form
    3,321.21/4,983.90 = 1,861.32/x
  3. Step 3: Cross multiply
    3,321.21x = 4,983.90 × 1,861.32
  4. Step 4: Simplify right side
    3,321.21x = 9,276,632.75
  5. Step 5: Solve for x
    x = 9,276,632.75/3,321.21
  6. Step 6: Final answer
    x = 2,793.15

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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.