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Finding the Fourth Proportional to 3,714.42, 5,129.33 and 2,390.41

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Solution

The fourth proportional to 3,714.42, 5,129.33 and 2,390.41 is: 3,300.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,714.42 : 5,129.33 = 2,390.41 : x
  2. Step 2: Convert to fraction form
    3,714.42/5,129.33 = 2,390.41/x
  3. Step 3: Cross multiply
    3,714.42x = 5,129.33 × 2,390.41
  4. Step 4: Simplify right side
    3,714.42x = 12,261,201.73
  5. Step 5: Solve for x
    x = 12,261,201.73/3,714.42
  6. Step 6: Final answer
    x = 3,300.97

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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.