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Finding the Fourth Proportional to 2,894.85, 3,990.90 and 1,832.07

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Solution

The fourth proportional to 2,894.85, 3,990.90 and 1,832.07 is: 2,525.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,894.85 : 3,990.90 = 1,832.07 : x
  2. Step 2: Convert to fraction form
    2,894.85/3,990.90 = 1,832.07/x
  3. Step 3: Cross multiply
    2,894.85x = 3,990.90 × 1,832.07
  4. Step 4: Simplify right side
    2,894.85x = 7,311,608.16
  5. Step 5: Solve for x
    x = 7,311,608.16/2,894.85
  6. Step 6: Final answer
    x = 2,525.73

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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.