Home / 2,611.88-3,603.78-1,912.04

Finding the Fourth Proportional to 2,611.88, 3,603.78 and 1,912.04

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Solution

The fourth proportional to 2,611.88, 3,603.78 and 1,912.04 is: 2,638.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,611.88 : 3,603.78 = 1,912.04 : x
  2. Step 2: Convert to fraction form
    2,611.88/3,603.78 = 1,912.04/x
  3. Step 3: Cross multiply
    2,611.88x = 3,603.78 × 1,912.04
  4. Step 4: Simplify right side
    2,611.88x = 6,890,571.51
  5. Step 5: Solve for x
    x = 6,890,571.51/2,611.88
  6. Step 6: Final answer
    x = 2,638.17

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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.