Home / 8,022.20-12,029.70-3,090.20

Finding the Fourth Proportional to 8,022.20, 12,029.70 and 3,090.20

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Solution

The fourth proportional to 8,022.20, 12,029.70 and 3,090.20 is: 4,633.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,022.20 : 12,029.70 = 3,090.20 : x
  2. Step 2: Convert to fraction form
    8,022.20/12,029.70 = 3,090.20/x
  3. Step 3: Cross multiply
    8,022.20x = 12,029.70 × 3,090.20
  4. Step 4: Simplify right side
    8,022.20x = 37,174,178.94
  5. Step 5: Solve for x
    x = 37,174,178.94/8,022.20
  6. Step 6: Final answer
    x = 4,633.91

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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.