Home / 7,109.66-9,811.77-3,922.94

Finding the Fourth Proportional to 7,109.66, 9,811.77 and 3,922.94

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Solution

The fourth proportional to 7,109.66, 9,811.77 and 3,922.94 is: 5,413.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,109.66 : 9,811.77 = 3,922.94 : x
  2. Step 2: Convert to fraction form
    7,109.66/9,811.77 = 3,922.94/x
  3. Step 3: Cross multiply
    7,109.66x = 9,811.77 × 3,922.94
  4. Step 4: Simplify right side
    7,109.66x = 38,490,985.00
  5. Step 5: Solve for x
    x = 38,490,985.00/7,109.66
  6. Step 6: Final answer
    x = 5,413.90

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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.