Home / 3,621.72-5,422.86-2,157.24

Finding the Fourth Proportional to 3,621.72, 5,422.86 and 2,157.24

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Solution

The fourth proportional to 3,621.72, 5,422.86 and 2,157.24 is: 3,230.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.72 : 5,422.86 = 2,157.24 : x
  2. Step 2: Convert to fraction form
    3,621.72/5,422.86 = 2,157.24/x
  3. Step 3: Cross multiply
    3,621.72x = 5,422.86 × 2,157.24
  4. Step 4: Simplify right side
    3,621.72x = 11,698,410.51
  5. Step 5: Solve for x
    x = 11,698,410.51/3,621.72
  6. Step 6: Final answer
    x = 3,230.07

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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.