Home / 2,790.19-4,185.29-1,251.19

Finding the Fourth Proportional to 2,790.19, 4,185.29 and 1,251.19

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Solution

The fourth proportional to 2,790.19, 4,185.29 and 1,251.19 is: 1,876.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.19 : 4,185.29 = 1,251.19 : x
  2. Step 2: Convert to fraction form
    2,790.19/4,185.29 = 1,251.19/x
  3. Step 3: Cross multiply
    2,790.19x = 4,185.29 × 1,251.19
  4. Step 4: Simplify right side
    2,790.19x = 5,236,576.28
  5. Step 5: Solve for x
    x = 5,236,576.28/2,790.19
  6. Step 6: Final answer
    x = 1,876.78

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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.