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Finding the Fourth Proportional to 8,383.88, 12,578.90 and 3,453.94

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Solution

The fourth proportional to 8,383.88, 12,578.90 and 3,453.94 is: 5,182.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,383.88 : 12,578.90 = 3,453.94 : x
  2. Step 2: Convert to fraction form
    8,383.88/12,578.90 = 3,453.94/x
  3. Step 3: Cross multiply
    8,383.88x = 12,578.90 × 3,453.94
  4. Step 4: Simplify right side
    8,383.88x = 43,446,764.32
  5. Step 5: Solve for x
    x = 43,446,764.32/8,383.88
  6. Step 6: Final answer
    x = 5,182.18

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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.