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Finding the Fourth Proportional to 2,277, 3,415.99 and 1,290.28

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Solution

The fourth proportional to 2,277, 3,415.99 and 1,290.28 is: 1,935.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,277 : 3,415.99 = 1,290.28 : x
  2. Step 2: Convert to fraction form
    2,277/3,415.99 = 1,290.28/x
  3. Step 3: Cross multiply
    2,277x = 3,415.99 × 1,290.28
  4. Step 4: Simplify right side
    2,277x = 4,407,583.58
  5. Step 5: Solve for x
    x = 4,407,583.58/2,277
  6. Step 6: Final answer
    x = 1,935.70

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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.