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Finding the Fourth Proportional to 5,751, 8,626.98 and 1,647

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Solution

The fourth proportional to 5,751, 8,626.98 and 1,647 is: 2,470.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,751 : 8,626.98 = 1,647 : x
  2. Step 2: Convert to fraction form
    5,751/8,626.98 = 1,647/x
  3. Step 3: Cross multiply
    5,751x = 8,626.98 × 1,647
  4. Step 4: Simplify right side
    5,751x = 14,208,636.06
  5. Step 5: Solve for x
    x = 14,208,636.06/5,751
  6. Step 6: Final answer
    x = 2,470.64

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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.