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Finding the Fourth Proportional to 7,611.81, 11,413.16 and 3,164.12

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Solution

The fourth proportional to 7,611.81, 11,413.16 and 3,164.12 is: 4,744.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,611.81 : 11,413.16 = 3,164.12 : x
  2. Step 2: Convert to fraction form
    7,611.81/11,413.16 = 3,164.12/x
  3. Step 3: Cross multiply
    7,611.81x = 11,413.16 × 3,164.12
  4. Step 4: Simplify right side
    7,611.81x = 36,112,607.82
  5. Step 5: Solve for x
    x = 36,112,607.82/7,611.81
  6. Step 6: Final answer
    x = 4,744.29

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1.5x scale

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.