Home / 2,185.73-3,278.73-1,317.41

Finding the Fourth Proportional to 2,185.73, 3,278.73 and 1,317.41

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Solution

The fourth proportional to 2,185.73, 3,278.73 and 1,317.41 is: 1,976.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,185.73 : 3,278.73 = 1,317.41 : x
  2. Step 2: Convert to fraction form
    2,185.73/3,278.73 = 1,317.41/x
  3. Step 3: Cross multiply
    2,185.73x = 3,278.73 × 1,317.41
  4. Step 4: Simplify right side
    2,185.73x = 4,319,431.69
  5. Step 5: Solve for x
    x = 4,319,431.69/2,185.73
  6. Step 6: Final answer
    x = 1,976.20

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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.