Home / 1,611.84-2,221.22-1,086.96

Finding the Fourth Proportional to 1,611.84, 2,221.22 and 1,086.96

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Solution

The fourth proportional to 1,611.84, 2,221.22 and 1,086.96 is: 1,497.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611.84 : 2,221.22 = 1,086.96 : x
  2. Step 2: Convert to fraction form
    1,611.84/2,221.22 = 1,086.96/x
  3. Step 3: Cross multiply
    1,611.84x = 2,221.22 × 1,086.96
  4. Step 4: Simplify right side
    1,611.84x = 2,414,377.29
  5. Step 5: Solve for x
    x = 2,414,377.29/1,611.84
  6. Step 6: Final answer
    x = 1,497.90

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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.