Home / 1,413.98-2,122.80-1,089.56

Finding the Fourth Proportional to 1,413.98, 2,122.80 and 1,089.56

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Solution

The fourth proportional to 1,413.98, 2,122.80 and 1,089.56 is: 1,635.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,413.98 : 2,122.80 = 1,089.56 : x
  2. Step 2: Convert to fraction form
    1,413.98/2,122.80 = 1,089.56/x
  3. Step 3: Cross multiply
    1,413.98x = 2,122.80 × 1,089.56
  4. Step 4: Simplify right side
    1,413.98x = 2,312,917.97
  5. Step 5: Solve for x
    x = 2,312,917.97/1,413.98
  6. Step 6: Final answer
    x = 1,635.75

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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.