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Finding the Fourth Proportional to 2,668.78, 3,976.97 and 2,580.58

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Solution

The fourth proportional to 2,668.78, 3,976.97 and 2,580.58 is: 3,845.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,668.78 : 3,976.97 = 2,580.58 : x
  2. Step 2: Convert to fraction form
    2,668.78/3,976.97 = 2,580.58/x
  3. Step 3: Cross multiply
    2,668.78x = 3,976.97 × 2,580.58
  4. Step 4: Simplify right side
    2,668.78x = 10,262,889.24
  5. Step 5: Solve for x
    x = 10,262,889.24/2,668.78
  6. Step 6: Final answer
    x = 3,845.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.