Home / 1,413.18-2,119.00-1,122.55

Finding the Fourth Proportional to 1,413.18, 2,119.00 and 1,122.55

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Solution

The fourth proportional to 1,413.18, 2,119.00 and 1,122.55 is: 1,683.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,413.18 : 2,119.00 = 1,122.55 : x
  2. Step 2: Convert to fraction form
    1,413.18/2,119.00 = 1,122.55/x
  3. Step 3: Cross multiply
    1,413.18x = 2,119.00 × 1,122.55
  4. Step 4: Simplify right side
    1,413.18x = 2,378,677.45
  5. Step 5: Solve for x
    x = 2,378,677.45/1,413.18
  6. Step 6: Final answer
    x = 1,683.21

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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.