Home / 8,299.47-12,450.65-3,105.39

Finding the Fourth Proportional to 8,299.47, 12,450.65 and 3,105.39

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Solution

The fourth proportional to 8,299.47, 12,450.65 and 3,105.39 is: 4,658.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,299.47 : 12,450.65 = 3,105.39 : x
  2. Step 2: Convert to fraction form
    8,299.47/12,450.65 = 3,105.39/x
  3. Step 3: Cross multiply
    8,299.47x = 12,450.65 × 3,105.39
  4. Step 4: Simplify right side
    8,299.47x = 38,664,108.48
  5. Step 5: Solve for x
    x = 38,664,108.48/8,299.47
  6. Step 6: Final answer
    x = 4,658.62

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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.