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Finding the Fourth Proportional to 1,668.67, 2,500.03 and 1,422.70

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Solution

The fourth proportional to 1,668.67, 2,500.03 and 1,422.70 is: 2,131.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,668.67 : 2,500.03 = 1,422.70 : x
  2. Step 2: Convert to fraction form
    1,668.67/2,500.03 = 1,422.70/x
  3. Step 3: Cross multiply
    1,668.67x = 2,500.03 × 1,422.70
  4. Step 4: Simplify right side
    1,668.67x = 3,556,788.21
  5. Step 5: Solve for x
    x = 3,556,788.21/1,668.67
  6. Step 6: Final answer
    x = 2,131.51

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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.