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Finding the Fourth Proportional to 6,379.68, 9,568.88 and 2,219.28

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Solution

The fourth proportional to 6,379.68, 9,568.88 and 2,219.28 is: 3,328.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,379.68 : 9,568.88 = 2,219.28 : x
  2. Step 2: Convert to fraction form
    6,379.68/9,568.88 = 2,219.28/x
  3. Step 3: Cross multiply
    6,379.68x = 9,568.88 × 2,219.28
  4. Step 4: Simplify right side
    6,379.68x = 21,236,024.01
  5. Step 5: Solve for x
    x = 21,236,024.01/6,379.68
  6. Step 6: Final answer
    x = 3,328.70

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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.