Home / 2,138.20-2,950.34-1,351.64

Finding the Fourth Proportional to 2,138.20, 2,950.34 and 1,351.64

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Solution

The fourth proportional to 2,138.20, 2,950.34 and 1,351.64 is: 1,865.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.20 : 2,950.34 = 1,351.64 : x
  2. Step 2: Convert to fraction form
    2,138.20/2,950.34 = 1,351.64/x
  3. Step 3: Cross multiply
    2,138.20x = 2,950.34 × 1,351.64
  4. Step 4: Simplify right side
    2,138.20x = 3,987,797.56
  5. Step 5: Solve for x
    x = 3,987,797.56/2,138.20
  6. Step 6: Final answer
    x = 1,865.03

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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.