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Finding the Fourth Proportional to 8,383.57, 12,580.82 and 3,189.49

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Solution

The fourth proportional to 8,383.57, 12,580.82 and 3,189.49 is: 4,786.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,383.57 : 12,580.82 = 3,189.49 : x
  2. Step 2: Convert to fraction form
    8,383.57/12,580.82 = 3,189.49/x
  3. Step 3: Cross multiply
    8,383.57x = 12,580.82 × 3,189.49
  4. Step 4: Simplify right side
    8,383.57x = 40,126,383.63
  5. Step 5: Solve for x
    x = 40,126,383.63/8,383.57
  6. Step 6: Final answer
    x = 4,786.31

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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.