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Finding the Fourth Proportional to 8,609.35, 12,903.64 and 4,447.09

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Solution

The fourth proportional to 8,609.35, 12,903.64 and 4,447.09 is: 6,665.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,609.35 : 12,903.64 = 4,447.09 : x
  2. Step 2: Convert to fraction form
    8,609.35/12,903.64 = 4,447.09/x
  3. Step 3: Cross multiply
    8,609.35x = 12,903.64 × 4,447.09
  4. Step 4: Simplify right side
    8,609.35x = 57,383,648.41
  5. Step 5: Solve for x
    x = 57,383,648.41/8,609.35
  6. Step 6: Final answer
    x = 6,665.27

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1.5x scale

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.