Home / 3,811.75-5,262.41-2,908.40

Finding the Fourth Proportional to 3,811.75, 5,262.41 and 2,908.40

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Solution

The fourth proportional to 3,811.75, 5,262.41 and 2,908.40 is: 4,015.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.75 : 5,262.41 = 2,908.40 : x
  2. Step 2: Convert to fraction form
    3,811.75/5,262.41 = 2,908.40/x
  3. Step 3: Cross multiply
    3,811.75x = 5,262.41 × 2,908.40
  4. Step 4: Simplify right side
    3,811.75x = 15,305,174.20
  5. Step 5: Solve for x
    x = 15,305,174.20/3,811.75
  6. Step 6: Final answer
    x = 4,015.26

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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.