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Finding the Fourth Proportional to 8,187.90, 12,283.09 and 4,183.09

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Solution

The fourth proportional to 8,187.90, 12,283.09 and 4,183.09 is: 6,275.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,187.90 : 12,283.09 = 4,183.09 : x
  2. Step 2: Convert to fraction form
    8,187.90/12,283.09 = 4,183.09/x
  3. Step 3: Cross multiply
    8,187.90x = 12,283.09 × 4,183.09
  4. Step 4: Simplify right side
    8,187.90x = 51,381,270.95
  5. Step 5: Solve for x
    x = 51,381,270.95/8,187.90
  6. Step 6: Final answer
    x = 6,275.27

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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.