Home / 3,459.88-5,189.82-1,121.84

Finding the Fourth Proportional to 3,459.88, 5,189.82 and 1,121.84

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Solution

The fourth proportional to 3,459.88, 5,189.82 and 1,121.84 is: 1,682.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,459.88 : 5,189.82 = 1,121.84 : x
  2. Step 2: Convert to fraction form
    3,459.88/5,189.82 = 1,121.84/x
  3. Step 3: Cross multiply
    3,459.88x = 5,189.82 × 1,121.84
  4. Step 4: Simplify right side
    3,459.88x = 5,822,147.67
  5. Step 5: Solve for x
    x = 5,822,147.67/3,459.88
  6. Step 6: Final answer
    x = 1,682.76

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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.