Home / 1,611.78-2,223.60-1,087.98

Finding the Fourth Proportional to 1,611.78, 2,223.60 and 1,087.98

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Solution

The fourth proportional to 1,611.78, 2,223.60 and 1,087.98 is: 1,500.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611.78 : 2,223.60 = 1,087.98 : x
  2. Step 2: Convert to fraction form
    1,611.78/2,223.60 = 1,087.98/x
  3. Step 3: Cross multiply
    1,611.78x = 2,223.60 × 1,087.98
  4. Step 4: Simplify right side
    1,611.78x = 2,419,232.33
  5. Step 5: Solve for x
    x = 2,419,232.33/1,611.78
  6. Step 6: Final answer
    x = 1,500.97

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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.