Home / 1,413.88-1,951.15-861.88

Finding the Fourth Proportional to 1,413.88, 1,951.15 and 861.88

Calculator

Solution

The fourth proportional to 1,413.88, 1,951.15 and 861.88 is: 1,189.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,413.88 : 1,951.15 = 861.88 : x
  2. Step 2: Convert to fraction form
    1,413.88/1,951.15 = 861.88/x
  3. Step 3: Cross multiply
    1,413.88x = 1,951.15 × 861.88
  4. Step 4: Simplify right side
    1,413.88x = 1,681,647.41
  5. Step 5: Solve for x
    x = 1,681,647.41/1,413.88
  6. Step 6: Final answer
    x = 1,189.39

Related Problems

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.