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Finding the Fourth Proportional to 3,726.75, 5,590.11 and 2,905.63

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Solution

The fourth proportional to 3,726.75, 5,590.11 and 2,905.63 is: 4,358.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,726.75 : 5,590.11 = 2,905.63 : x
  2. Step 2: Convert to fraction form
    3,726.75/5,590.11 = 2,905.63/x
  3. Step 3: Cross multiply
    3,726.75x = 5,590.11 × 2,905.63
  4. Step 4: Simplify right side
    3,726.75x = 16,242,777.34
  5. Step 5: Solve for x
    x = 16,242,777.34/3,726.75
  6. Step 6: Final answer
    x = 4,358.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.