Home / 4,105.12-6,156.39-1,331.15

Finding the Fourth Proportional to 4,105.12, 6,156.39 and 1,331.15

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Solution

The fourth proportional to 4,105.12, 6,156.39 and 1,331.15 is: 1,996.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,105.12 : 6,156.39 = 1,331.15 : x
  2. Step 2: Convert to fraction form
    4,105.12/6,156.39 = 1,331.15/x
  3. Step 3: Cross multiply
    4,105.12x = 6,156.39 × 1,331.15
  4. Step 4: Simplify right side
    4,105.12x = 8,195,079.90
  5. Step 5: Solve for x
    x = 8,195,079.90/4,105.12
  6. Step 6: Final answer
    x = 1,996.31

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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.