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Finding the Fourth Proportional to 8,921.68, 12,318.68 and 6,093.16

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Solution

The fourth proportional to 8,921.68, 12,318.68 and 6,093.16 is: 8,413.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.68 : 12,318.68 = 6,093.16 : x
  2. Step 2: Convert to fraction form
    8,921.68/12,318.68 = 6,093.16/x
  3. Step 3: Cross multiply
    8,921.68x = 12,318.68 × 6,093.16
  4. Step 4: Simplify right side
    8,921.68x = 75,059,688.23
  5. Step 5: Solve for x
    x = 75,059,688.23/8,921.68
  6. Step 6: Final answer
    x = 8,413.18

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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.