Home / 3,418.31-4,717.46-1,905.90

Finding the Fourth Proportional to 3,418.31, 4,717.46 and 1,905.90

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Solution

The fourth proportional to 3,418.31, 4,717.46 and 1,905.90 is: 2,630.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.31 : 4,717.46 = 1,905.90 : x
  2. Step 2: Convert to fraction form
    3,418.31/4,717.46 = 1,905.90/x
  3. Step 3: Cross multiply
    3,418.31x = 4,717.46 × 1,905.90
  4. Step 4: Simplify right side
    3,418.31x = 8,990,997.48
  5. Step 5: Solve for x
    x = 8,990,997.48/3,418.31
  6. Step 6: Final answer
    x = 2,630.25

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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.