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Finding the Fourth Proportional to 6,399.65, 9,600.71 and 1,957.61

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Solution

The fourth proportional to 6,399.65, 9,600.71 and 1,957.61 is: 2,936.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,399.65 : 9,600.71 = 1,957.61 : x
  2. Step 2: Convert to fraction form
    6,399.65/9,600.71 = 1,957.61/x
  3. Step 3: Cross multiply
    6,399.65x = 9,600.71 × 1,957.61
  4. Step 4: Simplify right side
    6,399.65x = 18,794,460.12
  5. Step 5: Solve for x
    x = 18,794,460.12/6,399.65
  6. Step 6: Final answer
    x = 2,936.79

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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.