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Finding the Fourth Proportional to 6,396.88, 9,579.84 and 5,293.12

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Solution

The fourth proportional to 6,396.88, 9,579.84 and 5,293.12 is: 7,926.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,396.88 : 9,579.84 = 5,293.12 : x
  2. Step 2: Convert to fraction form
    6,396.88/9,579.84 = 5,293.12/x
  3. Step 3: Cross multiply
    6,396.88x = 9,579.84 × 5,293.12
  4. Step 4: Simplify right side
    6,396.88x = 50,707,242.70
  5. Step 5: Solve for x
    x = 50,707,242.70/6,396.88
  6. Step 6: Final answer
    x = 7,926.87

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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.