Home / 7,109.42-9,810.94-3,922.75

Finding the Fourth Proportional to 7,109.42, 9,810.94 and 3,922.75

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Solution

The fourth proportional to 7,109.42, 9,810.94 and 3,922.75 is: 5,413.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,109.42 : 9,810.94 = 3,922.75 : x
  2. Step 2: Convert to fraction form
    7,109.42/9,810.94 = 3,922.75/x
  3. Step 3: Cross multiply
    7,109.42x = 9,810.94 × 3,922.75
  4. Step 4: Simplify right side
    7,109.42x = 38,485,847.10
  5. Step 5: Solve for x
    x = 38,485,847.10/7,109.42
  6. Step 6: Final answer
    x = 5,413.36

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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.