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Finding the Fourth Proportional to 8,458.69, 12,679.67 and 4,008.54

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Solution

The fourth proportional to 8,458.69, 12,679.67 and 4,008.54 is: 6,008.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,458.69 : 12,679.67 = 4,008.54 : x
  2. Step 2: Convert to fraction form
    8,458.69/12,679.67 = 4,008.54/x
  3. Step 3: Cross multiply
    8,458.69x = 12,679.67 × 4,008.54
  4. Step 4: Simplify right side
    8,458.69x = 50,826,974.40
  5. Step 5: Solve for x
    x = 50,826,974.40/8,458.69
  6. Step 6: Final answer
    x = 6,008.85

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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.