Home / 3,411.77-5,115.42-1,331.97

Finding the Fourth Proportional to 3,411.77, 5,115.42 and 1,331.97

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Solution

The fourth proportional to 3,411.77, 5,115.42 and 1,331.97 is: 1,997.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,411.77 : 5,115.42 = 1,331.97 : x
  2. Step 2: Convert to fraction form
    3,411.77/5,115.42 = 1,331.97/x
  3. Step 3: Cross multiply
    3,411.77x = 5,115.42 × 1,331.97
  4. Step 4: Simplify right side
    3,411.77x = 6,813,585.98
  5. Step 5: Solve for x
    x = 6,813,585.98/3,411.77
  6. Step 6: Final answer
    x = 1,997.09

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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.