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Finding the Fourth Proportional to 8,348.42, 12,511.58 and 4,391.58

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Solution

The fourth proportional to 8,348.42, 12,511.58 and 4,391.58 is: 6,581.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,348.42 : 12,511.58 = 4,391.58 : x
  2. Step 2: Convert to fraction form
    8,348.42/12,511.58 = 4,391.58/x
  3. Step 3: Cross multiply
    8,348.42x = 12,511.58 × 4,391.58
  4. Step 4: Simplify right side
    8,348.42x = 54,945,604.50
  5. Step 5: Solve for x
    x = 54,945,604.50/8,348.42
  6. Step 6: Final answer
    x = 6,581.56

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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.