Home / 3,321.28-4,983-2,771.20

Finding the Fourth Proportional to 3,321.28, 4,983 and 2,771.20

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Solution

The fourth proportional to 3,321.28, 4,983 and 2,771.20 is: 4,157.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,321.28 : 4,983 = 2,771.20 : x
  2. Step 2: Convert to fraction form
    3,321.28/4,983 = 2,771.20/x
  3. Step 3: Cross multiply
    3,321.28x = 4,983 × 2,771.20
  4. Step 4: Simplify right side
    3,321.28x = 13,808,889.60
  5. Step 5: Solve for x
    x = 13,808,889.60/3,321.28
  6. Step 6: Final answer
    x = 4,157.70

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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.