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Finding the Fourth Proportional to 5,979.71, 8,969.88 and 1,819.85

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Solution

The fourth proportional to 5,979.71, 8,969.88 and 1,819.85 is: 2,729.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,979.71 : 8,969.88 = 1,819.85 : x
  2. Step 2: Convert to fraction form
    5,979.71/8,969.88 = 1,819.85/x
  3. Step 3: Cross multiply
    5,979.71x = 8,969.88 × 1,819.85
  4. Step 4: Simplify right side
    5,979.71x = 16,323,791.27
  5. Step 5: Solve for x
    x = 16,323,791.27/5,979.71
  6. Step 6: Final answer
    x = 2,729.87

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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.