Home / 8,628.56-12,942.85-2,786.03

Finding the Fourth Proportional to 8,628.56, 12,942.85 and 2,786.03

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Solution

The fourth proportional to 8,628.56, 12,942.85 and 2,786.03 is: 4,179.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.56 : 12,942.85 = 2,786.03 : x
  2. Step 2: Convert to fraction form
    8,628.56/12,942.85 = 2,786.03/x
  3. Step 3: Cross multiply
    8,628.56x = 12,942.85 × 2,786.03
  4. Step 4: Simplify right side
    8,628.56x = 36,059,186.81
  5. Step 5: Solve for x
    x = 36,059,186.81/8,628.56
  6. Step 6: Final answer
    x = 4,179.05

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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.