Home / 2,758.91-4,134.39-2,139.71

Finding the Fourth Proportional to 2,758.91, 4,134.39 and 2,139.71

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Solution

The fourth proportional to 2,758.91, 4,134.39 and 2,139.71 is: 3,206.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,758.91 : 4,134.39 = 2,139.71 : x
  2. Step 2: Convert to fraction form
    2,758.91/4,134.39 = 2,139.71/x
  3. Step 3: Cross multiply
    2,758.91x = 4,134.39 × 2,139.71
  4. Step 4: Simplify right side
    2,758.91x = 8,846,374.95
  5. Step 5: Solve for x
    x = 8,846,374.95/2,758.91
  6. Step 6: Final answer
    x = 3,206.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.