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Finding the Fourth Proportional to 8,451.81, 12,668.81 and 4,059.99

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Solution

The fourth proportional to 8,451.81, 12,668.81 and 4,059.99 is: 6,085.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,451.81 : 12,668.81 = 4,059.99 : x
  2. Step 2: Convert to fraction form
    8,451.81/12,668.81 = 4,059.99/x
  3. Step 3: Cross multiply
    8,451.81x = 12,668.81 × 4,059.99
  4. Step 4: Simplify right side
    8,451.81x = 51,435,221.61
  5. Step 5: Solve for x
    x = 51,435,221.61/8,451.81
  6. Step 6: Final answer
    x = 6,085.70

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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.