Home / 3,105.82-4,286.55-1,864.06

Finding the Fourth Proportional to 3,105.82, 4,286.55 and 1,864.06

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Solution

The fourth proportional to 3,105.82, 4,286.55 and 1,864.06 is: 2,572.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.82 : 4,286.55 = 1,864.06 : x
  2. Step 2: Convert to fraction form
    3,105.82/4,286.55 = 1,864.06/x
  3. Step 3: Cross multiply
    3,105.82x = 4,286.55 × 1,864.06
  4. Step 4: Simplify right side
    3,105.82x = 7,990,386.39
  5. Step 5: Solve for x
    x = 7,990,386.39/3,105.82
  6. Step 6: Final answer
    x = 2,572.71

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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.