Home / 7,622.20-11,436.04-3,240

Finding the Fourth Proportional to 7,622.20, 11,436.04 and 3,240

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Solution

The fourth proportional to 7,622.20, 11,436.04 and 3,240 is: 4,861.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,622.20 : 11,436.04 = 3,240 : x
  2. Step 2: Convert to fraction form
    7,622.20/11,436.04 = 3,240/x
  3. Step 3: Cross multiply
    7,622.20x = 11,436.04 × 3,240
  4. Step 4: Simplify right side
    7,622.20x = 37,052,755.43
  5. Step 5: Solve for x
    x = 37,052,755.43/7,622.20
  6. Step 6: Final answer
    x = 4,861.16

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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.