Home / 3,107.89-4,661.83-2,131.03

Finding the Fourth Proportional to 3,107.89, 4,661.83 and 2,131.03

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Solution

The fourth proportional to 3,107.89, 4,661.83 and 2,131.03 is: 3,196.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107.89 : 4,661.83 = 2,131.03 : x
  2. Step 2: Convert to fraction form
    3,107.89/4,661.83 = 2,131.03/x
  3. Step 3: Cross multiply
    3,107.89x = 4,661.83 × 2,131.03
  4. Step 4: Simplify right side
    3,107.89x = 9,934,482.60
  5. Step 5: Solve for x
    x = 9,934,482.60/3,107.89
  6. Step 6: Final answer
    x = 3,196.54

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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.