Home / 3,891.45-5,822.60-2,161.29

Finding the Fourth Proportional to 3,891.45, 5,822.60 and 2,161.29

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Solution

The fourth proportional to 3,891.45, 5,822.60 and 2,161.29 is: 3,233.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.45 : 5,822.60 = 2,161.29 : x
  2. Step 2: Convert to fraction form
    3,891.45/5,822.60 = 2,161.29/x
  3. Step 3: Cross multiply
    3,891.45x = 5,822.60 × 2,161.29
  4. Step 4: Simplify right side
    3,891.45x = 12,584,316.35
  5. Step 5: Solve for x
    x = 12,584,316.35/3,891.45
  6. Step 6: Final answer
    x = 3,233.84

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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.