Home / 2,789.76-3,849.78-1,611.06

Finding the Fourth Proportional to 2,789.76, 3,849.78 and 1,611.06

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Solution

The fourth proportional to 2,789.76, 3,849.78 and 1,611.06 is: 2,223.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.76 : 3,849.78 = 1,611.06 : x
  2. Step 2: Convert to fraction form
    2,789.76/3,849.78 = 1,611.06/x
  3. Step 3: Cross multiply
    2,789.76x = 3,849.78 × 1,611.06
  4. Step 4: Simplify right side
    2,789.76x = 6,202,226.57
  5. Step 5: Solve for x
    x = 6,202,226.57/2,789.76
  6. Step 6: Final answer
    x = 2,223.21

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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.