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Finding the Fourth Proportional to 7,081.92, 10,605.60 and 3,608.64

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Solution

The fourth proportional to 7,081.92, 10,605.60 and 3,608.64 is: 5,404.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,081.92 : 10,605.60 = 3,608.64 : x
  2. Step 2: Convert to fraction form
    7,081.92/10,605.60 = 3,608.64/x
  3. Step 3: Cross multiply
    7,081.92x = 10,605.60 × 3,608.64
  4. Step 4: Simplify right side
    7,081.92x = 38,271,792.38
  5. Step 5: Solve for x
    x = 38,271,792.38/7,081.92
  6. Step 6: Final answer
    x = 5,404.15

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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.