Home / 6,115.45-8,427.21-4,342.09

Finding the Fourth Proportional to 6,115.45, 8,427.21 and 4,342.09

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Solution

The fourth proportional to 6,115.45, 8,427.21 and 4,342.09 is: 5,983.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,115.45 : 8,427.21 = 4,342.09 : x
  2. Step 2: Convert to fraction form
    6,115.45/8,427.21 = 4,342.09/x
  3. Step 3: Cross multiply
    6,115.45x = 8,427.21 × 4,342.09
  4. Step 4: Simplify right side
    6,115.45x = 36,591,704.27
  5. Step 5: Solve for x
    x = 36,591,704.27/6,115.45
  6. Step 6: Final answer
    x = 5,983.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.