Home / 3,114.12-4,671.30-2,137.80

Finding the Fourth Proportional to 3,114.12, 4,671.30 and 2,137.80

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Solution

The fourth proportional to 3,114.12, 4,671.30 and 2,137.80 is: 3,206.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,114.12 : 4,671.30 = 2,137.80 : x
  2. Step 2: Convert to fraction form
    3,114.12/4,671.30 = 2,137.80/x
  3. Step 3: Cross multiply
    3,114.12x = 4,671.30 × 2,137.80
  4. Step 4: Simplify right side
    3,114.12x = 9,986,305.14
  5. Step 5: Solve for x
    x = 9,986,305.14/3,114.12
  6. Step 6: Final answer
    x = 3,206.78

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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.