Home / 2,836.05-3,915.66-2,171.72

Finding the Fourth Proportional to 2,836.05, 3,915.66 and 2,171.72

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Solution

The fourth proportional to 2,836.05, 3,915.66 and 2,171.72 is: 2,998.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,836.05 : 3,915.66 = 2,171.72 : x
  2. Step 2: Convert to fraction form
    2,836.05/3,915.66 = 2,171.72/x
  3. Step 3: Cross multiply
    2,836.05x = 3,915.66 × 2,171.72
  4. Step 4: Simplify right side
    2,836.05x = 8,503,697.56
  5. Step 5: Solve for x
    x = 8,503,697.56/2,836.05
  6. Step 6: Final answer
    x = 2,998.43

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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.