Home / 2,912.38-3,983.54-2,867.02

Finding the Fourth Proportional to 2,912.38, 3,983.54 and 2,867.02

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Solution

The fourth proportional to 2,912.38, 3,983.54 and 2,867.02 is: 3,921.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.38 : 3,983.54 = 2,867.02 : x
  2. Step 2: Convert to fraction form
    2,912.38/3,983.54 = 2,867.02/x
  3. Step 3: Cross multiply
    2,912.38x = 3,983.54 × 2,867.02
  4. Step 4: Simplify right side
    2,912.38x = 11,420,888.85
  5. Step 5: Solve for x
    x = 11,420,888.85/2,912.38
  6. Step 6: Final answer
    x = 3,921.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.