Home / 2,721.56-3,755.68-1,790

Finding the Fourth Proportional to 2,721.56, 3,755.68 and 1,790

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Solution

The fourth proportional to 2,721.56, 3,755.68 and 1,790 is: 2,470.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.56 : 3,755.68 = 1,790 : x
  2. Step 2: Convert to fraction form
    2,721.56/3,755.68 = 1,790/x
  3. Step 3: Cross multiply
    2,721.56x = 3,755.68 × 1,790
  4. Step 4: Simplify right side
    2,721.56x = 6,722,667.20
  5. Step 5: Solve for x
    x = 6,722,667.20/2,721.56
  6. Step 6: Final answer
    x = 2,470.15

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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.