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Finding the Fourth Proportional to 8,712.03, 12,084.29 and 8,413.33

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Solution

The fourth proportional to 8,712.03, 12,084.29 and 8,413.33 is: 11,669.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.03 : 12,084.29 = 8,413.33 : x
  2. Step 2: Convert to fraction form
    8,712.03/12,084.29 = 8,413.33/x
  3. Step 3: Cross multiply
    8,712.03x = 12,084.29 × 8,413.33
  4. Step 4: Simplify right side
    8,712.03x = 101,669,148.84
  5. Step 5: Solve for x
    x = 101,669,148.84/8,712.03
  6. Step 6: Final answer
    x = 11,669.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.