Home / 3,621.22-4,995.60-2,128.66

Finding the Fourth Proportional to 3,621.22, 4,995.60 and 2,128.66

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Solution

The fourth proportional to 3,621.22, 4,995.60 and 2,128.66 is: 2,936.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.22 : 4,995.60 = 2,128.66 : x
  2. Step 2: Convert to fraction form
    3,621.22/4,995.60 = 2,128.66/x
  3. Step 3: Cross multiply
    3,621.22x = 4,995.60 × 2,128.66
  4. Step 4: Simplify right side
    3,621.22x = 10,633,933.90
  5. Step 5: Solve for x
    x = 10,633,933.90/3,621.22
  6. Step 6: Final answer
    x = 2,936.56

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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.