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Finding the Fourth Proportional to 8,428.94, 12,645.03 and 3,234.41

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Solution

The fourth proportional to 8,428.94, 12,645.03 and 3,234.41 is: 4,852.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.94 : 12,645.03 = 3,234.41 : x
  2. Step 2: Convert to fraction form
    8,428.94/12,645.03 = 3,234.41/x
  3. Step 3: Cross multiply
    8,428.94x = 12,645.03 × 3,234.41
  4. Step 4: Simplify right side
    8,428.94x = 40,899,211.48
  5. Step 5: Solve for x
    x = 40,899,211.48/8,428.94
  6. Step 6: Final answer
    x = 4,852.24

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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.