Home / 2,113.08-3,170.34-1,331.97

Finding the Fourth Proportional to 2,113.08, 3,170.34 and 1,331.97

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Solution

The fourth proportional to 2,113.08, 3,170.34 and 1,331.97 is: 1,998.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113.08 : 3,170.34 = 1,331.97 : x
  2. Step 2: Convert to fraction form
    2,113.08/3,170.34 = 1,331.97/x
  3. Step 3: Cross multiply
    2,113.08x = 3,170.34 × 1,331.97
  4. Step 4: Simplify right side
    2,113.08x = 4,222,797.77
  5. Step 5: Solve for x
    x = 4,222,797.77/2,113.08
  6. Step 6: Final answer
    x = 1,998.41

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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.