Home / 2,717.35-4,077.24-1,990.78

Finding the Fourth Proportional to 2,717.35, 4,077.24 and 1,990.78

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Solution

The fourth proportional to 2,717.35, 4,077.24 and 1,990.78 is: 2,987.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,717.35 : 4,077.24 = 1,990.78 : x
  2. Step 2: Convert to fraction form
    2,717.35/4,077.24 = 1,990.78/x
  3. Step 3: Cross multiply
    2,717.35x = 4,077.24 × 1,990.78
  4. Step 4: Simplify right side
    2,717.35x = 8,116,887.85
  5. Step 5: Solve for x
    x = 8,116,887.85/2,717.35
  6. Step 6: Final answer
    x = 2,987.06

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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.