Home / 1,268.19-1,901.21-834.39

Finding the Fourth Proportional to 1,268.19, 1,901.21 and 834.39

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Solution

The fourth proportional to 1,268.19, 1,901.21 and 834.39 is: 1,250.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268.19 : 1,901.21 = 834.39 : x
  2. Step 2: Convert to fraction form
    1,268.19/1,901.21 = 834.39/x
  3. Step 3: Cross multiply
    1,268.19x = 1,901.21 × 834.39
  4. Step 4: Simplify right side
    1,268.19x = 1,586,346.44
  5. Step 5: Solve for x
    x = 1,586,346.44/1,268.19
  6. Step 6: Final answer
    x = 1,250.87

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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.