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Finding the Fourth Proportional to 3,216.70, 4,819.54 and 1,756.88

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Solution

The fourth proportional to 3,216.70, 4,819.54 and 1,756.88 is: 2,632.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,216.70 : 4,819.54 = 1,756.88 : x
  2. Step 2: Convert to fraction form
    3,216.70/4,819.54 = 1,756.88/x
  3. Step 3: Cross multiply
    3,216.70x = 4,819.54 × 1,756.88
  4. Step 4: Simplify right side
    3,216.70x = 8,467,353.44
  5. Step 5: Solve for x
    x = 8,467,353.44/3,216.70
  6. Step 6: Final answer
    x = 2,632.31

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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.