Home / 8,191.32-12,289.26-2,997.72

Finding the Fourth Proportional to 8,191.32, 12,289.26 and 2,997.72

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Solution

The fourth proportional to 8,191.32, 12,289.26 and 2,997.72 is: 4,497.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,191.32 : 12,289.26 = 2,997.72 : x
  2. Step 2: Convert to fraction form
    8,191.32/12,289.26 = 2,997.72/x
  3. Step 3: Cross multiply
    8,191.32x = 12,289.26 × 2,997.72
  4. Step 4: Simplify right side
    8,191.32x = 36,839,760.49
  5. Step 5: Solve for x
    x = 36,839,760.49/8,191.32
  6. Step 6: Final answer
    x = 4,497.41

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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.