Home / 3,863.57-5,331.93-2,185.05

Finding the Fourth Proportional to 3,863.57, 5,331.93 and 2,185.05

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Solution

The fourth proportional to 3,863.57, 5,331.93 and 2,185.05 is: 3,015.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,863.57 : 5,331.93 = 2,185.05 : x
  2. Step 2: Convert to fraction form
    3,863.57/5,331.93 = 2,185.05/x
  3. Step 3: Cross multiply
    3,863.57x = 5,331.93 × 2,185.05
  4. Step 4: Simplify right side
    3,863.57x = 11,650,533.65
  5. Step 5: Solve for x
    x = 11,650,533.65/3,863.57
  6. Step 6: Final answer
    x = 3,015.49

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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.