Home / 2,585.67-3,876.19-1,268.70

Finding the Fourth Proportional to 2,585.67, 3,876.19 and 1,268.70

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Solution

The fourth proportional to 2,585.67, 3,876.19 and 1,268.70 is: 1,901.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,585.67 : 3,876.19 = 1,268.70 : x
  2. Step 2: Convert to fraction form
    2,585.67/3,876.19 = 1,268.70/x
  3. Step 3: Cross multiply
    2,585.67x = 3,876.19 × 1,268.70
  4. Step 4: Simplify right side
    2,585.67x = 4,917,722.25
  5. Step 5: Solve for x
    x = 4,917,722.25/2,585.67
  6. Step 6: Final answer
    x = 1,901.91

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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.