Home / 3,621.62-4,997.76-2,129.60

Finding the Fourth Proportional to 3,621.62, 4,997.76 and 2,129.60

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Solution

The fourth proportional to 3,621.62, 4,997.76 and 2,129.60 is: 2,938.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.62 : 4,997.76 = 2,129.60 : x
  2. Step 2: Convert to fraction form
    3,621.62/4,997.76 = 2,129.60/x
  3. Step 3: Cross multiply
    3,621.62x = 4,997.76 × 2,129.60
  4. Step 4: Simplify right side
    3,621.62x = 10,643,229.70
  5. Step 5: Solve for x
    x = 10,643,229.70/3,621.62
  6. Step 6: Final answer
    x = 2,938.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.