Home / 8,979.30-12,402.54-6,338.49

Finding the Fourth Proportional to 8,979.30, 12,402.54 and 6,338.49

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Solution

The fourth proportional to 8,979.30, 12,402.54 and 6,338.49 is: 8,754.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.30 : 12,402.54 = 6,338.49 : x
  2. Step 2: Convert to fraction form
    8,979.30/12,402.54 = 6,338.49/x
  3. Step 3: Cross multiply
    8,979.30x = 12,402.54 × 6,338.49
  4. Step 4: Simplify right side
    8,979.30x = 78,613,375.76
  5. Step 5: Solve for x
    x = 78,613,375.76/8,979.30
  6. Step 6: Final answer
    x = 8,754.96

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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.