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Finding the Fourth Proportional to 1,427.96, 2,141.93 and 1,141.22

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Solution

The fourth proportional to 1,427.96, 2,141.93 and 1,141.22 is: 1,711.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.96 : 2,141.93 = 1,141.22 : x
  2. Step 2: Convert to fraction form
    1,427.96/2,141.93 = 1,141.22/x
  3. Step 3: Cross multiply
    1,427.96x = 2,141.93 × 1,141.22
  4. Step 4: Simplify right side
    1,427.96x = 2,444,413.35
  5. Step 5: Solve for x
    x = 2,444,413.35/1,427.96
  6. Step 6: Final answer
    x = 1,711.82

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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.