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Finding the Fourth Proportional to 1,976, 2,726.88 and 1,190.08

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Solution

The fourth proportional to 1,976, 2,726.88 and 1,190.08 is: 1,642.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,976 : 2,726.88 = 1,190.08 : x
  2. Step 2: Convert to fraction form
    1,976/2,726.88 = 1,190.08/x
  3. Step 3: Cross multiply
    1,976x = 2,726.88 × 1,190.08
  4. Step 4: Simplify right side
    1,976x = 3,245,205.35
  5. Step 5: Solve for x
    x = 3,245,205.35/1,976
  6. Step 6: Final answer
    x = 1,642.31

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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.