Home / 2,806.16-3,872.34-1,611.20

Finding the Fourth Proportional to 2,806.16, 3,872.34 and 1,611.20

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Solution

The fourth proportional to 2,806.16, 3,872.34 and 1,611.20 is: 2,223.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,806.16 : 3,872.34 = 1,611.20 : x
  2. Step 2: Convert to fraction form
    2,806.16/3,872.34 = 1,611.20/x
  3. Step 3: Cross multiply
    2,806.16x = 3,872.34 × 1,611.20
  4. Step 4: Simplify right side
    2,806.16x = 6,239,114.21
  5. Step 5: Solve for x
    x = 6,239,114.21/2,806.16
  6. Step 6: Final answer
    x = 2,223.37

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Half scale
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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.