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Finding the Fourth Proportional to 1,668.80, 2,512.46 and 1,474.91

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Solution

The fourth proportional to 1,668.80, 2,512.46 and 1,474.91 is: 2,220.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,668.80 : 2,512.46 = 1,474.91 : x
  2. Step 2: Convert to fraction form
    1,668.80/2,512.46 = 1,474.91/x
  3. Step 3: Cross multiply
    1,668.80x = 2,512.46 × 1,474.91
  4. Step 4: Simplify right side
    1,668.80x = 3,705,632.44
  5. Step 5: Solve for x
    x = 3,705,632.44/1,668.80
  6. Step 6: Final answer
    x = 2,220.54

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.