Home / 2,668.20-3,678.78-1,673.11

Finding the Fourth Proportional to 2,668.20, 3,678.78 and 1,673.11

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Solution

The fourth proportional to 2,668.20, 3,678.78 and 1,673.11 is: 2,306.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,668.20 : 3,678.78 = 1,673.11 : x
  2. Step 2: Convert to fraction form
    2,668.20/3,678.78 = 1,673.11/x
  3. Step 3: Cross multiply
    2,668.20x = 3,678.78 × 1,673.11
  4. Step 4: Simplify right side
    2,668.20x = 6,155,003.61
  5. Step 5: Solve for x
    x = 6,155,003.61/2,668.20
  6. Step 6: Final answer
    x = 2,306.80

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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.