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Finding the Fourth Proportional to 5,979.32, 8,969.30 and 1,819.46

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Solution

The fourth proportional to 5,979.32, 8,969.30 and 1,819.46 is: 2,729.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,979.32 : 8,969.30 = 1,819.46 : x
  2. Step 2: Convert to fraction form
    5,979.32/8,969.30 = 1,819.46/x
  3. Step 3: Cross multiply
    5,979.32x = 8,969.30 × 1,819.46
  4. Step 4: Simplify right side
    5,979.32x = 16,319,302.73
  5. Step 5: Solve for x
    x = 16,319,302.73/5,979.32
  6. Step 6: Final answer
    x = 2,729.29

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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.