Home / 2,668.83-4,002.23-1,281.78

Finding the Fourth Proportional to 2,668.83, 4,002.23 and 1,281.78

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Solution

The fourth proportional to 2,668.83, 4,002.23 and 1,281.78 is: 1,922.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,668.83 : 4,002.23 = 1,281.78 : x
  2. Step 2: Convert to fraction form
    2,668.83/4,002.23 = 1,281.78/x
  3. Step 3: Cross multiply
    2,668.83x = 4,002.23 × 1,281.78
  4. Step 4: Simplify right side
    2,668.83x = 5,129,971.96
  5. Step 5: Solve for x
    x = 5,129,971.96/2,668.83
  6. Step 6: Final answer
    x = 1,922.18

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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.