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Finding the Fourth Proportional to 8,479.62, 12,713.29 and 3,550.70

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Solution

The fourth proportional to 8,479.62, 12,713.29 and 3,550.70 is: 5,323.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,479.62 : 12,713.29 = 3,550.70 : x
  2. Step 2: Convert to fraction form
    8,479.62/12,713.29 = 3,550.70/x
  3. Step 3: Cross multiply
    8,479.62x = 12,713.29 × 3,550.70
  4. Step 4: Simplify right side
    8,479.62x = 45,141,101.71
  5. Step 5: Solve for x
    x = 45,141,101.71/8,479.62
  6. Step 6: Final answer
    x = 5,323.48

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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.