Home / 2,186.15-3,278.91-935.96

Finding the Fourth Proportional to 2,186.15, 3,278.91 and 935.96

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Solution

The fourth proportional to 2,186.15, 3,278.91 and 935.96 is: 1,403.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186.15 : 3,278.91 = 935.96 : x
  2. Step 2: Convert to fraction form
    2,186.15/3,278.91 = 935.96/x
  3. Step 3: Cross multiply
    2,186.15x = 3,278.91 × 935.96
  4. Step 4: Simplify right side
    2,186.15x = 3,068,928.60
  5. Step 5: Solve for x
    x = 3,068,928.60/2,186.15
  6. Step 6: Final answer
    x = 1,403.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.