Home / 3,847.35-5,309.31-2,078.94

Finding the Fourth Proportional to 3,847.35, 5,309.31 and 2,078.94

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Solution

The fourth proportional to 3,847.35, 5,309.31 and 2,078.94 is: 2,868.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,847.35 : 5,309.31 = 2,078.94 : x
  2. Step 2: Convert to fraction form
    3,847.35/5,309.31 = 2,078.94/x
  3. Step 3: Cross multiply
    3,847.35x = 5,309.31 × 2,078.94
  4. Step 4: Simplify right side
    3,847.35x = 11,037,736.93
  5. Step 5: Solve for x
    x = 11,037,736.93/3,847.35
  6. Step 6: Final answer
    x = 2,868.92

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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.