Home / 2,161.14-2,982.45-1,216.92

Finding the Fourth Proportional to 2,161.14, 2,982.45 and 1,216.92

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Solution

The fourth proportional to 2,161.14, 2,982.45 and 1,216.92 is: 1,679.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.14 : 2,982.45 = 1,216.92 : x
  2. Step 2: Convert to fraction form
    2,161.14/2,982.45 = 1,216.92/x
  3. Step 3: Cross multiply
    2,161.14x = 2,982.45 × 1,216.92
  4. Step 4: Simplify right side
    2,161.14x = 3,629,403.05
  5. Step 5: Solve for x
    x = 3,629,403.05/2,161.14
  6. Step 6: Final answer
    x = 1,679.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.