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Finding the Fourth Proportional to 2,758.92, 4,133.17 and 2,139.59

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Solution

The fourth proportional to 2,758.92, 4,133.17 and 2,139.59 is: 3,205.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,758.92 : 4,133.17 = 2,139.59 : x
  2. Step 2: Convert to fraction form
    2,758.92/4,133.17 = 2,139.59/x
  3. Step 3: Cross multiply
    2,758.92x = 4,133.17 × 2,139.59
  4. Step 4: Simplify right side
    2,758.92x = 8,843,289.20
  5. Step 5: Solve for x
    x = 8,843,289.20/2,758.92
  6. Step 6: Final answer
    x = 3,205.34

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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.