Home / 1,601.82-2,212.70-1,355.78

Finding the Fourth Proportional to 1,601.82, 2,212.70 and 1,355.78

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Solution

The fourth proportional to 1,601.82, 2,212.70 and 1,355.78 is: 1,872.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,601.82 : 2,212.70 = 1,355.78 : x
  2. Step 2: Convert to fraction form
    1,601.82/2,212.70 = 1,355.78/x
  3. Step 3: Cross multiply
    1,601.82x = 2,212.70 × 1,355.78
  4. Step 4: Simplify right side
    1,601.82x = 2,999,933.16
  5. Step 5: Solve for x
    x = 2,999,933.16/1,601.82
  6. Step 6: Final answer
    x = 1,872.83

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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.