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Finding the Fourth Proportional to 8,344.05, 11,513.79 and 4,986.09

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Solution

The fourth proportional to 8,344.05, 11,513.79 and 4,986.09 is: 6,880.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,344.05 : 11,513.79 = 4,986.09 : x
  2. Step 2: Convert to fraction form
    8,344.05/11,513.79 = 4,986.09/x
  3. Step 3: Cross multiply
    8,344.05x = 11,513.79 × 4,986.09
  4. Step 4: Simplify right side
    8,344.05x = 57,408,793.18
  5. Step 5: Solve for x
    x = 57,408,793.18/8,344.05
  6. Step 6: Final answer
    x = 6,880.21

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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.