Home / 8,786.20-12,124.83-4,807.21

Finding the Fourth Proportional to 8,786.20, 12,124.83 and 4,807.21

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Solution

The fourth proportional to 8,786.20, 12,124.83 and 4,807.21 is: 6,633.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,786.20 : 12,124.83 = 4,807.21 : x
  2. Step 2: Convert to fraction form
    8,786.20/12,124.83 = 4,807.21/x
  3. Step 3: Cross multiply
    8,786.20x = 12,124.83 × 4,807.21
  4. Step 4: Simplify right side
    8,786.20x = 58,286,604.02
  5. Step 5: Solve for x
    x = 58,286,604.02/8,786.20
  6. Step 6: Final answer
    x = 6,633.88

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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.