Home / 2,836.67-3,911.81-2,672.64

Finding the Fourth Proportional to 2,836.67, 3,911.81 and 2,672.64

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Solution

The fourth proportional to 2,836.67, 3,911.81 and 2,672.64 is: 3,685.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,836.67 : 3,911.81 = 2,672.64 : x
  2. Step 2: Convert to fraction form
    2,836.67/3,911.81 = 2,672.64/x
  3. Step 3: Cross multiply
    2,836.67x = 3,911.81 × 2,672.64
  4. Step 4: Simplify right side
    2,836.67x = 10,454,846.52
  5. Step 5: Solve for x
    x = 10,454,846.52/2,836.67
  6. Step 6: Final answer
    x = 3,685.61

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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.