Home / 8,662.09-12,995.70-3,115.30

Finding the Fourth Proportional to 8,662.09, 12,995.70 and 3,115.30

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Solution

The fourth proportional to 8,662.09, 12,995.70 and 3,115.30 is: 4,673.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,662.09 : 12,995.70 = 3,115.30 : x
  2. Step 2: Convert to fraction form
    8,662.09/12,995.70 = 3,115.30/x
  3. Step 3: Cross multiply
    8,662.09x = 12,995.70 × 3,115.30
  4. Step 4: Simplify right side
    8,662.09x = 40,485,504.21
  5. Step 5: Solve for x
    x = 40,485,504.21/8,662.09
  6. Step 6: Final answer
    x = 4,673.87

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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.