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Finding the Fourth Proportional to 3,726.78, 5,591.39 and 1,995

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Solution

The fourth proportional to 3,726.78, 5,591.39 and 1,995 is: 2,993.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,726.78 : 5,591.39 = 1,995 : x
  2. Step 2: Convert to fraction form
    3,726.78/5,591.39 = 1,995/x
  3. Step 3: Cross multiply
    3,726.78x = 5,591.39 × 1,995
  4. Step 4: Simplify right side
    3,726.78x = 11,154,813.08
  5. Step 5: Solve for x
    x = 11,154,813.08/3,726.78
  6. Step 6: Final answer
    x = 2,993.15

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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.