Home / 3,621.20-4,996.96-2,129.18

Finding the Fourth Proportional to 3,621.20, 4,996.96 and 2,129.18

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Solution

The fourth proportional to 3,621.20, 4,996.96 and 2,129.18 is: 2,938.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.20 : 4,996.96 = 2,129.18 : x
  2. Step 2: Convert to fraction form
    3,621.20/4,996.96 = 2,129.18/x
  3. Step 3: Cross multiply
    3,621.20x = 4,996.96 × 2,129.18
  4. Step 4: Simplify right side
    3,621.20x = 10,639,396.99
  5. Step 5: Solve for x
    x = 10,639,396.99/3,621.20
  6. Step 6: Final answer
    x = 2,938.09

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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.