Home / 2,720.62-3,755.73-1,777.78

Finding the Fourth Proportional to 2,720.62, 3,755.73 and 1,777.78

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Solution

The fourth proportional to 2,720.62, 3,755.73 and 1,777.78 is: 2,454.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.62 : 3,755.73 = 1,777.78 : x
  2. Step 2: Convert to fraction form
    2,720.62/3,755.73 = 1,777.78/x
  3. Step 3: Cross multiply
    2,720.62x = 3,755.73 × 1,777.78
  4. Step 4: Simplify right side
    2,720.62x = 6,676,861.68
  5. Step 5: Solve for x
    x = 6,676,861.68/2,720.62
  6. Step 6: Final answer
    x = 2,454.17

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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.