Home / 3,106.20-4,286.70-2,112.60

Finding the Fourth Proportional to 3,106.20, 4,286.70 and 2,112.60

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Solution

The fourth proportional to 3,106.20, 4,286.70 and 2,112.60 is: 2,915.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.20 : 4,286.70 = 2,112.60 : x
  2. Step 2: Convert to fraction form
    3,106.20/4,286.70 = 2,112.60/x
  3. Step 3: Cross multiply
    3,106.20x = 4,286.70 × 2,112.60
  4. Step 4: Simplify right side
    3,106.20x = 9,056,082.42
  5. Step 5: Solve for x
    x = 9,056,082.42/3,106.20
  6. Step 6: Final answer
    x = 2,915.49

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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.