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Finding the Fourth Proportional to 3,288.90, 4,940.55 and 2,316.90

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Solution

The fourth proportional to 3,288.90, 4,940.55 and 2,316.90 is: 3,480.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,288.90 : 4,940.55 = 2,316.90 : x
  2. Step 2: Convert to fraction form
    3,288.90/4,940.55 = 2,316.90/x
  3. Step 3: Cross multiply
    3,288.90x = 4,940.55 × 2,316.90
  4. Step 4: Simplify right side
    3,288.90x = 11,446,760.30
  5. Step 5: Solve for x
    x = 11,446,760.30/3,288.90
  6. Step 6: Final answer
    x = 3,480.42

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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.