Home / 3,790.15-5,230.23-2,111.54

Finding the Fourth Proportional to 3,790.15, 5,230.23 and 2,111.54

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Solution

The fourth proportional to 3,790.15, 5,230.23 and 2,111.54 is: 2,913.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,790.15 : 5,230.23 = 2,111.54 : x
  2. Step 2: Convert to fraction form
    3,790.15/5,230.23 = 2,111.54/x
  3. Step 3: Cross multiply
    3,790.15x = 5,230.23 × 2,111.54
  4. Step 4: Simplify right side
    3,790.15x = 11,043,839.85
  5. Step 5: Solve for x
    x = 11,043,839.85/3,790.15
  6. Step 6: Final answer
    x = 2,913.83

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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.