Home / 2,758.28-3,801.20-2,130.73

Finding the Fourth Proportional to 2,758.28, 3,801.20 and 2,130.73

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Solution

The fourth proportional to 2,758.28, 3,801.20 and 2,130.73 is: 2,936.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,758.28 : 3,801.20 = 2,130.73 : x
  2. Step 2: Convert to fraction form
    2,758.28/3,801.20 = 2,130.73/x
  3. Step 3: Cross multiply
    2,758.28x = 3,801.20 × 2,130.73
  4. Step 4: Simplify right side
    2,758.28x = 8,099,310.72
  5. Step 5: Solve for x
    x = 8,099,310.72/2,758.28
  6. Step 6: Final answer
    x = 2,936.37

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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.