Home / 8,979.39-12,391.77-5,202.56

Finding the Fourth Proportional to 8,979.39, 12,391.77 and 5,202.56

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Solution

The fourth proportional to 8,979.39, 12,391.77 and 5,202.56 is: 7,179.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.39 : 12,391.77 = 5,202.56 : x
  2. Step 2: Convert to fraction form
    8,979.39/12,391.77 = 5,202.56/x
  3. Step 3: Cross multiply
    8,979.39x = 12,391.77 × 5,202.56
  4. Step 4: Simplify right side
    8,979.39x = 64,468,926.93
  5. Step 5: Solve for x
    x = 64,468,926.93/8,979.39
  6. Step 6: Final answer
    x = 7,179.66

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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.