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Finding the Fourth Proportional to 6,414.64, 9,621.72 and 2,254.64

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Solution

The fourth proportional to 6,414.64, 9,621.72 and 2,254.64 is: 3,381.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,414.64 : 9,621.72 = 2,254.64 : x
  2. Step 2: Convert to fraction form
    6,414.64/9,621.72 = 2,254.64/x
  3. Step 3: Cross multiply
    6,414.64x = 9,621.72 × 2,254.64
  4. Step 4: Simplify right side
    6,414.64x = 21,693,514.78
  5. Step 5: Solve for x
    x = 21,693,514.78/6,414.64
  6. Step 6: Final answer
    x = 3,381.88

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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.