Home / 1,968.46-2,717.88-1,223.44

Finding the Fourth Proportional to 1,968.46, 2,717.88 and 1,223.44

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Solution

The fourth proportional to 1,968.46, 2,717.88 and 1,223.44 is: 1,689.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.46 : 2,717.88 = 1,223.44 : x
  2. Step 2: Convert to fraction form
    1,968.46/2,717.88 = 1,223.44/x
  3. Step 3: Cross multiply
    1,968.46x = 2,717.88 × 1,223.44
  4. Step 4: Simplify right side
    1,968.46x = 3,325,163.11
  5. Step 5: Solve for x
    x = 3,325,163.11/1,968.46
  6. Step 6: Final answer
    x = 1,689.22

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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.