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Finding the Fourth Proportional to 7,066.36, 9,751.80 and 3,922.78

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Solution

The fourth proportional to 7,066.36, 9,751.80 and 3,922.78 is: 5,413.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,066.36 : 9,751.80 = 3,922.78 : x
  2. Step 2: Convert to fraction form
    7,066.36/9,751.80 = 3,922.78/x
  3. Step 3: Cross multiply
    7,066.36x = 9,751.80 × 3,922.78
  4. Step 4: Simplify right side
    7,066.36x = 38,254,166.00
  5. Step 5: Solve for x
    x = 38,254,166.00/7,066.36
  6. Step 6: Final answer
    x = 5,413.56

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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.