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Finding the Fourth Proportional to 5,879.34, 8,819.28 and 1,983.78

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Solution

The fourth proportional to 5,879.34, 8,819.28 and 1,983.78 is: 2,975.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,879.34 : 8,819.28 = 1,983.78 : x
  2. Step 2: Convert to fraction form
    5,879.34/8,819.28 = 1,983.78/x
  3. Step 3: Cross multiply
    5,879.34x = 8,819.28 × 1,983.78
  4. Step 4: Simplify right side
    5,879.34x = 17,495,511.28
  5. Step 5: Solve for x
    x = 17,495,511.28/5,879.34
  6. Step 6: Final answer
    x = 2,975.76

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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.