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Finding the Fourth Proportional to 6,400.80, 9,604.32 and 2,704.32

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Solution

The fourth proportional to 6,400.80, 9,604.32 and 2,704.32 is: 4,057.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,400.80 : 9,604.32 = 2,704.32 : x
  2. Step 2: Convert to fraction form
    6,400.80/9,604.32 = 2,704.32/x
  3. Step 3: Cross multiply
    6,400.80x = 9,604.32 × 2,704.32
  4. Step 4: Simplify right side
    6,400.80x = 25,973,154.66
  5. Step 5: Solve for x
    x = 25,973,154.66/6,400.80
  6. Step 6: Final answer
    x = 4,057.80

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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.