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Finding the Fourth Proportional to 9,168.91, 13,753.46 and 2,928.89

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Solution

The fourth proportional to 9,168.91, 13,753.46 and 2,928.89 is: 4,393.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,168.91 : 13,753.46 = 2,928.89 : x
  2. Step 2: Convert to fraction form
    9,168.91/13,753.46 = 2,928.89/x
  3. Step 3: Cross multiply
    9,168.91x = 13,753.46 × 2,928.89
  4. Step 4: Simplify right side
    9,168.91x = 40,282,413.17
  5. Step 5: Solve for x
    x = 40,282,413.17/9,168.91
  6. Step 6: Final answer
    x = 4,393.37

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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.