Home / 2,079.70-2,868.96-1,372.78

Finding the Fourth Proportional to 2,079.70, 2,868.96 and 1,372.78

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Solution

The fourth proportional to 2,079.70, 2,868.96 and 1,372.78 is: 1,893.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.70 : 2,868.96 = 1,372.78 : x
  2. Step 2: Convert to fraction form
    2,079.70/2,868.96 = 1,372.78/x
  3. Step 3: Cross multiply
    2,079.70x = 2,868.96 × 1,372.78
  4. Step 4: Simplify right side
    2,079.70x = 3,938,450.91
  5. Step 5: Solve for x
    x = 3,938,450.91/2,079.70
  6. Step 6: Final answer
    x = 1,893.76

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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.