Home / 2,074.90-2,863.85-1,289.54

Finding the Fourth Proportional to 2,074.90, 2,863.85 and 1,289.54

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Solution

The fourth proportional to 2,074.90, 2,863.85 and 1,289.54 is: 1,779.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,074.90 : 2,863.85 = 1,289.54 : x
  2. Step 2: Convert to fraction form
    2,074.90/2,863.85 = 1,289.54/x
  3. Step 3: Cross multiply
    2,074.90x = 2,863.85 × 1,289.54
  4. Step 4: Simplify right side
    2,074.90x = 3,693,049.13
  5. Step 5: Solve for x
    x = 3,693,049.13/2,074.90
  6. Step 6: Final answer
    x = 1,779.87

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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.