Home / 2,161.68-3,231.37-1,607.64

Finding the Fourth Proportional to 2,161.68, 3,231.37 and 1,607.64

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Solution

The fourth proportional to 2,161.68, 3,231.37 and 1,607.64 is: 2,403.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.68 : 3,231.37 = 1,607.64 : x
  2. Step 2: Convert to fraction form
    2,161.68/3,231.37 = 1,607.64/x
  3. Step 3: Cross multiply
    2,161.68x = 3,231.37 × 1,607.64
  4. Step 4: Simplify right side
    2,161.68x = 5,194,879.67
  5. Step 5: Solve for x
    x = 5,194,879.67/2,161.68
  6. Step 6: Final answer
    x = 2,403.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.