Home / 3,305.78-4,958.69-1,431.23

Finding the Fourth Proportional to 3,305.78, 4,958.69 and 1,431.23

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Solution

The fourth proportional to 3,305.78, 4,958.69 and 1,431.23 is: 2,146.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,305.78 : 4,958.69 = 1,431.23 : x
  2. Step 2: Convert to fraction form
    3,305.78/4,958.69 = 1,431.23/x
  3. Step 3: Cross multiply
    3,305.78x = 4,958.69 × 1,431.23
  4. Step 4: Simplify right side
    3,305.78x = 7,096,993.94
  5. Step 5: Solve for x
    x = 7,096,993.94/3,305.78
  6. Step 6: Final answer
    x = 2,146.85

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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.