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Finding the Fourth Proportional to 8,453.43, 12,676.91 and 2,905.74

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Solution

The fourth proportional to 8,453.43, 12,676.91 and 2,905.74 is: 4,357.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,453.43 : 12,676.91 = 2,905.74 : x
  2. Step 2: Convert to fraction form
    8,453.43/12,676.91 = 2,905.74/x
  3. Step 3: Cross multiply
    8,453.43x = 12,676.91 × 2,905.74
  4. Step 4: Simplify right side
    8,453.43x = 36,835,789.93
  5. Step 5: Solve for x
    x = 36,835,789.93/8,453.43
  6. Step 6: Final answer
    x = 4,357.50

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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.