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Finding the Fourth Proportional to 8,586.35, 12,879.59 and 3,039.71

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Solution

The fourth proportional to 8,586.35, 12,879.59 and 3,039.71 is: 4,559.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,586.35 : 12,879.59 = 3,039.71 : x
  2. Step 2: Convert to fraction form
    8,586.35/12,879.59 = 3,039.71/x
  3. Step 3: Cross multiply
    8,586.35x = 12,879.59 × 3,039.71
  4. Step 4: Simplify right side
    8,586.35x = 39,150,235.52
  5. Step 5: Solve for x
    x = 39,150,235.52/8,586.35
  6. Step 6: Final answer
    x = 4,559.59

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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.