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Finding the Fourth Proportional to 8,321.68, 11,479.08 and 5,964.40

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Solution

The fourth proportional to 8,321.68, 11,479.08 and 5,964.40 is: 8,227.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,321.68 : 11,479.08 = 5,964.40 : x
  2. Step 2: Convert to fraction form
    8,321.68/11,479.08 = 5,964.40/x
  3. Step 3: Cross multiply
    8,321.68x = 11,479.08 × 5,964.40
  4. Step 4: Simplify right side
    8,321.68x = 68,465,824.75
  5. Step 5: Solve for x
    x = 68,465,824.75/8,321.68
  6. Step 6: Final answer
    x = 8,227.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.