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Finding the Fourth Proportional to 1,958.93, 2,702.78 and 1,260.71

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Solution

The fourth proportional to 1,958.93, 2,702.78 and 1,260.71 is: 1,739.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,958.93 : 2,702.78 = 1,260.71 : x
  2. Step 2: Convert to fraction form
    1,958.93/2,702.78 = 1,260.71/x
  3. Step 3: Cross multiply
    1,958.93x = 2,702.78 × 1,260.71
  4. Step 4: Simplify right side
    1,958.93x = 3,407,405.11
  5. Step 5: Solve for x
    x = 3,407,405.11/1,958.93
  6. Step 6: Final answer
    x = 1,739.43

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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.