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Finding the Fourth Proportional to 8,609.48, 12,911.48 and 3,344.12

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Solution

The fourth proportional to 8,609.48, 12,911.48 and 3,344.12 is: 5,015.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,609.48 : 12,911.48 = 3,344.12 : x
  2. Step 2: Convert to fraction form
    8,609.48/12,911.48 = 3,344.12/x
  3. Step 3: Cross multiply
    8,609.48x = 12,911.48 × 3,344.12
  4. Step 4: Simplify right side
    8,609.48x = 43,177,538.50
  5. Step 5: Solve for x
    x = 43,177,538.50/8,609.48
  6. Step 6: Final answer
    x = 5,015.12

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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.