Home / 3,321.20-4,972.20-2,975.60

Finding the Fourth Proportional to 3,321.20, 4,972.20 and 2,975.60

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Solution

The fourth proportional to 3,321.20, 4,972.20 and 2,975.60 is: 4,454.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,321.20 : 4,972.20 = 2,975.60 : x
  2. Step 2: Convert to fraction form
    3,321.20/4,972.20 = 2,975.60/x
  3. Step 3: Cross multiply
    3,321.20x = 4,972.20 × 2,975.60
  4. Step 4: Simplify right side
    3,321.20x = 14,795,278.32
  5. Step 5: Solve for x
    x = 14,795,278.32/3,321.20
  6. Step 6: Final answer
    x = 4,454.80

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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.