Home / 8,131.56-12,170.61-5,361.36

Finding the Fourth Proportional to 8,131.56, 12,170.61 and 5,361.36

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Solution

The fourth proportional to 8,131.56, 12,170.61 and 5,361.36 is: 8,024.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,131.56 : 12,170.61 = 5,361.36 : x
  2. Step 2: Convert to fraction form
    8,131.56/12,170.61 = 5,361.36/x
  3. Step 3: Cross multiply
    8,131.56x = 12,170.61 × 5,361.36
  4. Step 4: Simplify right side
    8,131.56x = 65,251,021.63
  5. Step 5: Solve for x
    x = 65,251,021.63/8,131.56
  6. Step 6: Final answer
    x = 8,024.42

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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.