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Finding the Fourth Proportional to 8,015.81, 12,012.80 and 4,507.49

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Solution

The fourth proportional to 8,015.81, 12,012.80 and 4,507.49 is: 6,755.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,015.81 : 12,012.80 = 4,507.49 : x
  2. Step 2: Convert to fraction form
    8,015.81/12,012.80 = 4,507.49/x
  3. Step 3: Cross multiply
    8,015.81x = 12,012.80 × 4,507.49
  4. Step 4: Simplify right side
    8,015.81x = 54,147,553.33
  5. Step 5: Solve for x
    x = 54,147,553.33/8,015.81
  6. Step 6: Final answer
    x = 6,755.09

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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.