Home / 2,806.18-3,872.44-1,611.36

Finding the Fourth Proportional to 2,806.18, 3,872.44 and 1,611.36

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Solution

The fourth proportional to 2,806.18, 3,872.44 and 1,611.36 is: 2,223.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,806.18 : 3,872.44 = 1,611.36 : x
  2. Step 2: Convert to fraction form
    2,806.18/3,872.44 = 1,611.36/x
  3. Step 3: Cross multiply
    2,806.18x = 3,872.44 × 1,611.36
  4. Step 4: Simplify right side
    2,806.18x = 6,239,896.93
  5. Step 5: Solve for x
    x = 6,239,896.93/2,806.18
  6. Step 6: Final answer
    x = 2,223.63

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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.