Home / 1,940.12-2,911.19-966.09

Finding the Fourth Proportional to 1,940.12, 2,911.19 and 966.09

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Solution

The fourth proportional to 1,940.12, 2,911.19 and 966.09 is: 1,449.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940.12 : 2,911.19 = 966.09 : x
  2. Step 2: Convert to fraction form
    1,940.12/2,911.19 = 966.09/x
  3. Step 3: Cross multiply
    1,940.12x = 2,911.19 × 966.09
  4. Step 4: Simplify right side
    1,940.12x = 2,812,466.72
  5. Step 5: Solve for x
    x = 2,812,466.72/1,940.12
  6. Step 6: Final answer
    x = 1,449.64

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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.