Home / 3,117.43-4,310.28-2,979.73

Finding the Fourth Proportional to 3,117.43, 4,310.28 and 2,979.73

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Solution

The fourth proportional to 3,117.43, 4,310.28 and 2,979.73 is: 4,119.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.43 : 4,310.28 = 2,979.73 : x
  2. Step 2: Convert to fraction form
    3,117.43/4,310.28 = 2,979.73/x
  3. Step 3: Cross multiply
    3,117.43x = 4,310.28 × 2,979.73
  4. Step 4: Simplify right side
    3,117.43x = 12,843,470.62
  5. Step 5: Solve for x
    x = 12,843,470.62/3,117.43
  6. Step 6: Final answer
    x = 4,119.89

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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.