Home / 1,413.57-2,122.49-1,220.08

Finding the Fourth Proportional to 1,413.57, 2,122.49 and 1,220.08

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Solution

The fourth proportional to 1,413.57, 2,122.49 and 1,220.08 is: 1,831.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,413.57 : 2,122.49 = 1,220.08 : x
  2. Step 2: Convert to fraction form
    1,413.57/2,122.49 = 1,220.08/x
  3. Step 3: Cross multiply
    1,413.57x = 2,122.49 × 1,220.08
  4. Step 4: Simplify right side
    1,413.57x = 2,589,607.60
  5. Step 5: Solve for x
    x = 2,589,607.60/1,413.57
  6. Step 6: Final answer
    x = 1,831.96

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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.