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Finding the Fourth Proportional to 3,378.57, 4,662.99 and 3,289.74

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Solution

The fourth proportional to 3,378.57, 4,662.99 and 3,289.74 is: 4,540.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,378.57 : 4,662.99 = 3,289.74 : x
  2. Step 2: Convert to fraction form
    3,378.57/4,662.99 = 3,289.74/x
  3. Step 3: Cross multiply
    3,378.57x = 4,662.99 × 3,289.74
  4. Step 4: Simplify right side
    3,378.57x = 15,340,024.72
  5. Step 5: Solve for x
    x = 15,340,024.72/3,378.57
  6. Step 6: Final answer
    x = 4,540.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.