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Finding the Fourth Proportional to 3,276.67, 4,915 and 1,889.12

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Solution

The fourth proportional to 3,276.67, 4,915 and 1,889.12 is: 2,833.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,276.67 : 4,915 = 1,889.12 : x
  2. Step 2: Convert to fraction form
    3,276.67/4,915 = 1,889.12/x
  3. Step 3: Cross multiply
    3,276.67x = 4,915 × 1,889.12
  4. Step 4: Simplify right side
    3,276.67x = 9,285,024.80
  5. Step 5: Solve for x
    x = 9,285,024.80/3,276.67
  6. Step 6: Final answer
    x = 2,833.68

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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.