Home / 8,586.43-12,879.68-3,039.78

Finding the Fourth Proportional to 8,586.43, 12,879.68 and 3,039.78

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Solution

The fourth proportional to 8,586.43, 12,879.68 and 3,039.78 is: 4,559.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,586.43 : 12,879.68 = 3,039.78 : x
  2. Step 2: Convert to fraction form
    8,586.43/12,879.68 = 3,039.78/x
  3. Step 3: Cross multiply
    8,586.43x = 12,879.68 × 3,039.78
  4. Step 4: Simplify right side
    8,586.43x = 39,151,393.67
  5. Step 5: Solve for x
    x = 39,151,393.67/8,586.43
  6. Step 6: Final answer
    x = 4,559.68

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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.