Home / 3,107.12-4,661.62-1,257.89

Finding the Fourth Proportional to 3,107.12, 4,661.62 and 1,257.89

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Solution

The fourth proportional to 3,107.12, 4,661.62 and 1,257.89 is: 1,887.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107.12 : 4,661.62 = 1,257.89 : x
  2. Step 2: Convert to fraction form
    3,107.12/4,661.62 = 1,257.89/x
  3. Step 3: Cross multiply
    3,107.12x = 4,661.62 × 1,257.89
  4. Step 4: Simplify right side
    3,107.12x = 5,863,778.73
  5. Step 5: Solve for x
    x = 5,863,778.73/3,107.12
  6. Step 6: Final answer
    x = 1,887.21

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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.