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Finding the Fourth Proportional to 8,491.35, 12,735.78 and 2,251.74

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Solution

The fourth proportional to 8,491.35, 12,735.78 and 2,251.74 is: 3,377.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,491.35 : 12,735.78 = 2,251.74 : x
  2. Step 2: Convert to fraction form
    8,491.35/12,735.78 = 2,251.74/x
  3. Step 3: Cross multiply
    8,491.35x = 12,735.78 × 2,251.74
  4. Step 4: Simplify right side
    8,491.35x = 28,677,665.26
  5. Step 5: Solve for x
    x = 28,677,665.26/8,491.35
  6. Step 6: Final answer
    x = 3,377.28

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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.