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Finding the Fourth Proportional to 3,367.98, 5,051.97 and 1,421.55

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Solution

The fourth proportional to 3,367.98, 5,051.97 and 1,421.55 is: 2,132.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,367.98 : 5,051.97 = 1,421.55 : x
  2. Step 2: Convert to fraction form
    3,367.98/5,051.97 = 1,421.55/x
  3. Step 3: Cross multiply
    3,367.98x = 5,051.97 × 1,421.55
  4. Step 4: Simplify right side
    3,367.98x = 7,181,627.95
  5. Step 5: Solve for x
    x = 7,181,627.95/3,367.98
  6. Step 6: Final answer
    x = 2,132.33

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1.5x scale

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.