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Finding the Fourth Proportional to 1,968.80, 2,714.41 and 1,613.41

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Solution

The fourth proportional to 1,968.80, 2,714.41 and 1,613.41 is: 2,224.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.80 : 2,714.41 = 1,613.41 : x
  2. Step 2: Convert to fraction form
    1,968.80/2,714.41 = 1,613.41/x
  3. Step 3: Cross multiply
    1,968.80x = 2,714.41 × 1,613.41
  4. Step 4: Simplify right side
    1,968.80x = 4,379,445.42
  5. Step 5: Solve for x
    x = 4,379,445.42/1,968.80
  6. Step 6: Final answer
    x = 2,224.43

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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.