Home / 3,415.22-5,121.21-1,770.11

Finding the Fourth Proportional to 3,415.22, 5,121.21 and 1,770.11

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Solution

The fourth proportional to 3,415.22, 5,121.21 and 1,770.11 is: 2,654.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.22 : 5,121.21 = 1,770.11 : x
  2. Step 2: Convert to fraction form
    3,415.22/5,121.21 = 1,770.11/x
  3. Step 3: Cross multiply
    3,415.22x = 5,121.21 × 1,770.11
  4. Step 4: Simplify right side
    3,415.22x = 9,065,105.03
  5. Step 5: Solve for x
    x = 9,065,105.03/3,415.22
  6. Step 6: Final answer
    x = 2,654.33

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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.