Home / 1,413.56-1,945.94-1,215.92

Finding the Fourth Proportional to 1,413.56, 1,945.94 and 1,215.92

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Solution

The fourth proportional to 1,413.56, 1,945.94 and 1,215.92 is: 1,673.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,413.56 : 1,945.94 = 1,215.92 : x
  2. Step 2: Convert to fraction form
    1,413.56/1,945.94 = 1,215.92/x
  3. Step 3: Cross multiply
    1,413.56x = 1,945.94 × 1,215.92
  4. Step 4: Simplify right side
    1,413.56x = 2,366,107.36
  5. Step 5: Solve for x
    x = 2,366,107.36/1,413.56
  6. Step 6: Final answer
    x = 1,673.86

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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.