Home / 2,835.86-3,912.38-2,091.61

Finding the Fourth Proportional to 2,835.86, 3,912.38 and 2,091.61

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Solution

The fourth proportional to 2,835.86, 3,912.38 and 2,091.61 is: 2,885.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,835.86 : 3,912.38 = 2,091.61 : x
  2. Step 2: Convert to fraction form
    2,835.86/3,912.38 = 2,091.61/x
  3. Step 3: Cross multiply
    2,835.86x = 3,912.38 × 2,091.61
  4. Step 4: Simplify right side
    2,835.86x = 8,183,143.11
  5. Step 5: Solve for x
    x = 8,183,143.11/2,835.86
  6. Step 6: Final answer
    x = 2,885.59

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1.5x scale

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.