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Finding the Fourth Proportional to 3,285.54, 4,929.39 and 3,212.82

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Solution

The fourth proportional to 3,285.54, 4,929.39 and 3,212.82 is: 4,820.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,285.54 : 4,929.39 = 3,212.82 : x
  2. Step 2: Convert to fraction form
    3,285.54/4,929.39 = 3,212.82/x
  3. Step 3: Cross multiply
    3,285.54x = 4,929.39 × 3,212.82
  4. Step 4: Simplify right side
    3,285.54x = 15,837,242.78
  5. Step 5: Solve for x
    x = 15,837,242.78/3,285.54
  6. Step 6: Final answer
    x = 4,820.29

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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.