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Finding the Fourth Proportional to 2,852.56, 3,936 and 1,968.04

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Solution

The fourth proportional to 2,852.56, 3,936 and 1,968.04 is: 2,715.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,852.56 : 3,936 = 1,968.04 : x
  2. Step 2: Convert to fraction form
    2,852.56/3,936 = 1,968.04/x
  3. Step 3: Cross multiply
    2,852.56x = 3,936 × 1,968.04
  4. Step 4: Simplify right side
    2,852.56x = 7,746,205.44
  5. Step 5: Solve for x
    x = 7,746,205.44/2,852.56
  6. Step 6: Final answer
    x = 2,715.53

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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.