Home / 3,330.12-4,997.49-2,157.21

Finding the Fourth Proportional to 3,330.12, 4,997.49 and 2,157.21

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Solution

The fourth proportional to 3,330.12, 4,997.49 and 2,157.21 is: 3,237.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,330.12 : 4,997.49 = 2,157.21 : x
  2. Step 2: Convert to fraction form
    3,330.12/4,997.49 = 2,157.21/x
  3. Step 3: Cross multiply
    3,330.12x = 4,997.49 × 2,157.21
  4. Step 4: Simplify right side
    3,330.12x = 10,780,635.40
  5. Step 5: Solve for x
    x = 10,780,635.40/3,330.12
  6. Step 6: Final answer
    x = 3,237.31

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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.