Home / 1,990.54-2,741.70-1,979.59

Finding the Fourth Proportional to 1,990.54, 2,741.70 and 1,979.59

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Solution

The fourth proportional to 1,990.54, 2,741.70 and 1,979.59 is: 2,726.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.54 : 2,741.70 = 1,979.59 : x
  2. Step 2: Convert to fraction form
    1,990.54/2,741.70 = 1,979.59/x
  3. Step 3: Cross multiply
    1,990.54x = 2,741.70 × 1,979.59
  4. Step 4: Simplify right side
    1,990.54x = 5,427,441.90
  5. Step 5: Solve for x
    x = 5,427,441.90/1,990.54
  6. Step 6: Final answer
    x = 2,726.62

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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.