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Finding the Fourth Proportional to 8,606.84, 12,911.60 and 3,676.50

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Solution

The fourth proportional to 8,606.84, 12,911.60 and 3,676.50 is: 5,515.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,606.84 : 12,911.60 = 3,676.50 : x
  2. Step 2: Convert to fraction form
    8,606.84/12,911.60 = 3,676.50/x
  3. Step 3: Cross multiply
    8,606.84x = 12,911.60 × 3,676.50
  4. Step 4: Simplify right side
    8,606.84x = 47,469,506.59
  5. Step 5: Solve for x
    x = 47,469,506.59/8,606.84
  6. Step 6: Final answer
    x = 5,515.33

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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.