Home / 3,863.94-5,330.78-2,858.05

Finding the Fourth Proportional to 3,863.94, 5,330.78 and 2,858.05

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Solution

The fourth proportional to 3,863.94, 5,330.78 and 2,858.05 is: 3,943.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,863.94 : 5,330.78 = 2,858.05 : x
  2. Step 2: Convert to fraction form
    3,863.94/5,330.78 = 2,858.05/x
  3. Step 3: Cross multiply
    3,863.94x = 5,330.78 × 2,858.05
  4. Step 4: Simplify right side
    3,863.94x = 15,235,621.49
  5. Step 5: Solve for x
    x = 15,235,621.49/3,863.94
  6. Step 6: Final answer
    x = 3,943.03

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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.