Home / 8,072.96-12,112.54-3,146.09

Finding the Fourth Proportional to 8,072.96, 12,112.54 and 3,146.09

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Solution

The fourth proportional to 8,072.96, 12,112.54 and 3,146.09 is: 4,720.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,072.96 : 12,112.54 = 3,146.09 : x
  2. Step 2: Convert to fraction form
    8,072.96/12,112.54 = 3,146.09/x
  3. Step 3: Cross multiply
    8,072.96x = 12,112.54 × 3,146.09
  4. Step 4: Simplify right side
    8,072.96x = 38,107,072.54
  5. Step 5: Solve for x
    x = 38,107,072.54/8,072.96
  6. Step 6: Final answer
    x = 4,720.34

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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.