Home / 8,207.46-12,311.36-2,660.78

Finding the Fourth Proportional to 8,207.46, 12,311.36 and 2,660.78

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Solution

The fourth proportional to 8,207.46, 12,311.36 and 2,660.78 is: 3,991.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,207.46 : 12,311.36 = 2,660.78 : x
  2. Step 2: Convert to fraction form
    8,207.46/12,311.36 = 2,660.78/x
  3. Step 3: Cross multiply
    8,207.46x = 12,311.36 × 2,660.78
  4. Step 4: Simplify right side
    8,207.46x = 32,757,820.46
  5. Step 5: Solve for x
    x = 32,757,820.46/8,207.46
  6. Step 6: Final answer
    x = 3,991.23

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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.