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Finding the Fourth Proportional to 8,890.70, 13,336.70 and 3,047.26

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Solution

The fourth proportional to 8,890.70, 13,336.70 and 3,047.26 is: 4,571.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,890.70 : 13,336.70 = 3,047.26 : x
  2. Step 2: Convert to fraction form
    8,890.70/13,336.70 = 3,047.26/x
  3. Step 3: Cross multiply
    8,890.70x = 13,336.70 × 3,047.26
  4. Step 4: Simplify right side
    8,890.70x = 40,640,392.44
  5. Step 5: Solve for x
    x = 40,640,392.44/8,890.70
  6. Step 6: Final answer
    x = 4,571.11

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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.