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Finding the Fourth Proportional to 6,381.28, 9,576.28 and 2,221.25

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Solution

The fourth proportional to 6,381.28, 9,576.28 and 2,221.25 is: 3,333.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,381.28 : 9,576.28 = 2,221.25 : x
  2. Step 2: Convert to fraction form
    6,381.28/9,576.28 = 2,221.25/x
  3. Step 3: Cross multiply
    6,381.28x = 9,576.28 × 2,221.25
  4. Step 4: Simplify right side
    6,381.28x = 21,271,311.95
  5. Step 5: Solve for x
    x = 21,271,311.95/6,381.28
  6. Step 6: Final answer
    x = 3,333.39

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1.5x scale

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.