Home / 2,138.97-3,223.05-1,903.26

Finding the Fourth Proportional to 2,138.97, 3,223.05 and 1,903.26

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Solution

The fourth proportional to 2,138.97, 3,223.05 and 1,903.26 is: 2,867.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.97 : 3,223.05 = 1,903.26 : x
  2. Step 2: Convert to fraction form
    2,138.97/3,223.05 = 1,903.26/x
  3. Step 3: Cross multiply
    2,138.97x = 3,223.05 × 1,903.26
  4. Step 4: Simplify right side
    2,138.97x = 6,134,302.14
  5. Step 5: Solve for x
    x = 6,134,302.14/2,138.97
  6. Step 6: Final answer
    x = 2,867.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.