Home / 3,619.89-4,990-2,832.57

Finding the Fourth Proportional to 3,619.89, 4,990 and 2,832.57

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Solution

The fourth proportional to 3,619.89, 4,990 and 2,832.57 is: 3,904.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.89 : 4,990 = 2,832.57 : x
  2. Step 2: Convert to fraction form
    3,619.89/4,990 = 2,832.57/x
  3. Step 3: Cross multiply
    3,619.89x = 4,990 × 2,832.57
  4. Step 4: Simplify right side
    3,619.89x = 14,134,524.30
  5. Step 5: Solve for x
    x = 14,134,524.30/3,619.89
  6. Step 6: Final answer
    x = 3,904.68

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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.