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Finding the Fourth Proportional to 8,582.42, 12,880.92 and 3,391.94

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Solution

The fourth proportional to 8,582.42, 12,880.92 and 3,391.94 is: 5,090.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,582.42 : 12,880.92 = 3,391.94 : x
  2. Step 2: Convert to fraction form
    8,582.42/12,880.92 = 3,391.94/x
  3. Step 3: Cross multiply
    8,582.42x = 12,880.92 × 3,391.94
  4. Step 4: Simplify right side
    8,582.42x = 43,691,307.78
  5. Step 5: Solve for x
    x = 43,691,307.78/8,582.42
  6. Step 6: Final answer
    x = 5,090.79

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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.