Home / 2,128.73-2,937.30-1,331.96

Finding the Fourth Proportional to 2,128.73, 2,937.30 and 1,331.96

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Solution

The fourth proportional to 2,128.73, 2,937.30 and 1,331.96 is: 1,837.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.73 : 2,937.30 = 1,331.96 : x
  2. Step 2: Convert to fraction form
    2,128.73/2,937.30 = 1,331.96/x
  3. Step 3: Cross multiply
    2,128.73x = 2,937.30 × 1,331.96
  4. Step 4: Simplify right side
    2,128.73x = 3,912,351.42
  5. Step 5: Solve for x
    x = 3,912,351.42/2,128.73
  6. Step 6: Final answer
    x = 1,837.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.