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Finding the Fourth Proportional to 8,419.73, 12,592.69 and 5,879.39

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Solution

The fourth proportional to 8,419.73, 12,592.69 and 5,879.39 is: 8,793.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,419.73 : 12,592.69 = 5,879.39 : x
  2. Step 2: Convert to fraction form
    8,419.73/12,592.69 = 5,879.39/x
  3. Step 3: Cross multiply
    8,419.73x = 12,592.69 × 5,879.39
  4. Step 4: Simplify right side
    8,419.73x = 74,037,352.44
  5. Step 5: Solve for x
    x = 74,037,352.44/8,419.73
  6. Step 6: Final answer
    x = 8,793.31

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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.