Home / 8,921.27-12,311.43-4,942.43

Finding the Fourth Proportional to 8,921.27, 12,311.43 and 4,942.43

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Solution

The fourth proportional to 8,921.27, 12,311.43 and 4,942.43 is: 6,820.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.27 : 12,311.43 = 4,942.43 : x
  2. Step 2: Convert to fraction form
    8,921.27/12,311.43 = 4,942.43/x
  3. Step 3: Cross multiply
    8,921.27x = 12,311.43 × 4,942.43
  4. Step 4: Simplify right side
    8,921.27x = 60,848,380.97
  5. Step 5: Solve for x
    x = 60,848,380.97/8,921.27
  6. Step 6: Final answer
    x = 6,820.60

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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.