Home / 8,423.97-12,629.89-3,979.17

Finding the Fourth Proportional to 8,423.97, 12,629.89 and 3,979.17

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Solution

The fourth proportional to 8,423.97, 12,629.89 and 3,979.17 is: 5,965.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,423.97 : 12,629.89 = 3,979.17 : x
  2. Step 2: Convert to fraction form
    8,423.97/12,629.89 = 3,979.17/x
  3. Step 3: Cross multiply
    8,423.97x = 12,629.89 × 3,979.17
  4. Step 4: Simplify right side
    8,423.97x = 50,256,479.39
  5. Step 5: Solve for x
    x = 50,256,479.39/8,423.97
  6. Step 6: Final answer
    x = 5,965.89

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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.