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Finding the Fourth Proportional to 6,240, 9,367.20 and 3,168.48

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Solution

The fourth proportional to 6,240, 9,367.20 and 3,168.48 is: 4,756.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,240 : 9,367.20 = 3,168.48 : x
  2. Step 2: Convert to fraction form
    6,240/9,367.20 = 3,168.48/x
  3. Step 3: Cross multiply
    6,240x = 9,367.20 × 3,168.48
  4. Step 4: Simplify right side
    6,240x = 29,679,785.86
  5. Step 5: Solve for x
    x = 29,679,785.86/6,240
  6. Step 6: Final answer
    x = 4,756.38

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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.