Home / 1,611.39-2,223.81-1,217.73

Finding the Fourth Proportional to 1,611.39, 2,223.81 and 1,217.73

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Solution

The fourth proportional to 1,611.39, 2,223.81 and 1,217.73 is: 1,680.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611.39 : 2,223.81 = 1,217.73 : x
  2. Step 2: Convert to fraction form
    1,611.39/2,223.81 = 1,217.73/x
  3. Step 3: Cross multiply
    1,611.39x = 2,223.81 × 1,217.73
  4. Step 4: Simplify right side
    1,611.39x = 2,708,000.15
  5. Step 5: Solve for x
    x = 2,708,000.15/1,611.39
  6. Step 6: Final answer
    x = 1,680.54

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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.