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Finding the Fourth Proportional to 9,396.63, 12,967.19 and 5,147.65

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Solution

The fourth proportional to 9,396.63, 12,967.19 and 5,147.65 is: 7,103.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,396.63 : 12,967.19 = 5,147.65 : x
  2. Step 2: Convert to fraction form
    9,396.63/12,967.19 = 5,147.65/x
  3. Step 3: Cross multiply
    9,396.63x = 12,967.19 × 5,147.65
  4. Step 4: Simplify right side
    9,396.63x = 66,750,516.75
  5. Step 5: Solve for x
    x = 66,750,516.75/9,396.63
  6. Step 6: Final answer
    x = 7,103.67

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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.