Home / 2,668.09-4,002.90-1,107.80

Finding the Fourth Proportional to 2,668.09, 4,002.90 and 1,107.80

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Solution

The fourth proportional to 2,668.09, 4,002.90 and 1,107.80 is: 1,662.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,668.09 : 4,002.90 = 1,107.80 : x
  2. Step 2: Convert to fraction form
    2,668.09/4,002.90 = 1,107.80/x
  3. Step 3: Cross multiply
    2,668.09x = 4,002.90 × 1,107.80
  4. Step 4: Simplify right side
    2,668.09x = 4,434,420.95
  5. Step 5: Solve for x
    x = 4,434,420.95/2,668.09
  6. Step 6: Final answer
    x = 1,662.02

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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.