Home / 3,621.70-5,422.20-2,385.32

Finding the Fourth Proportional to 3,621.70, 5,422.20 and 2,385.32

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Solution

The fourth proportional to 3,621.70, 5,422.20 and 2,385.32 is: 3,571.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.70 : 5,422.20 = 2,385.32 : x
  2. Step 2: Convert to fraction form
    3,621.70/5,422.20 = 2,385.32/x
  3. Step 3: Cross multiply
    3,621.70x = 5,422.20 × 2,385.32
  4. Step 4: Simplify right side
    3,621.70x = 12,933,682.10
  5. Step 5: Solve for x
    x = 12,933,682.10/3,621.70
  6. Step 6: Final answer
    x = 3,571.17

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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.