Home / 7,162.09-9,883.77-3,975.45

Finding the Fourth Proportional to 7,162.09, 9,883.77 and 3,975.45

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Solution

The fourth proportional to 7,162.09, 9,883.77 and 3,975.45 is: 5,486.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,162.09 : 9,883.77 = 3,975.45 : x
  2. Step 2: Convert to fraction form
    7,162.09/9,883.77 = 3,975.45/x
  3. Step 3: Cross multiply
    7,162.09x = 9,883.77 × 3,975.45
  4. Step 4: Simplify right side
    7,162.09x = 39,292,413.57
  5. Step 5: Solve for x
    x = 39,292,413.57/7,162.09
  6. Step 6: Final answer
    x = 5,486.17

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1.5x scale

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.