Home / 1,413.26-2,120.10-439.44

Finding the Fourth Proportional to 1,413.26, 2,120.10 and 439.44

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Solution

The fourth proportional to 1,413.26, 2,120.10 and 439.44 is: 659.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,413.26 : 2,120.10 = 439.44 : x
  2. Step 2: Convert to fraction form
    1,413.26/2,120.10 = 439.44/x
  3. Step 3: Cross multiply
    1,413.26x = 2,120.10 × 439.44
  4. Step 4: Simplify right side
    1,413.26x = 931,656.74
  5. Step 5: Solve for x
    x = 931,656.74/1,413.26
  6. Step 6: Final answer
    x = 659.23

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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.