Home / 2,079.54-3,111.96-1,299.90

Finding the Fourth Proportional to 2,079.54, 3,111.96 and 1,299.90

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Solution

The fourth proportional to 2,079.54, 3,111.96 and 1,299.90 is: 1,945.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.54 : 3,111.96 = 1,299.90 : x
  2. Step 2: Convert to fraction form
    2,079.54/3,111.96 = 1,299.90/x
  3. Step 3: Cross multiply
    2,079.54x = 3,111.96 × 1,299.90
  4. Step 4: Simplify right side
    2,079.54x = 4,045,236.80
  5. Step 5: Solve for x
    x = 4,045,236.80/2,079.54
  6. Step 6: Final answer
    x = 1,945.26

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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.