Home / 1,268.70-1,903.68-1,088.88

Finding the Fourth Proportional to 1,268.70, 1,903.68 and 1,088.88

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Solution

The fourth proportional to 1,268.70, 1,903.68 and 1,088.88 is: 1,633.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268.70 : 1,903.68 = 1,088.88 : x
  2. Step 2: Convert to fraction form
    1,268.70/1,903.68 = 1,088.88/x
  3. Step 3: Cross multiply
    1,268.70x = 1,903.68 × 1,088.88
  4. Step 4: Simplify right side
    1,268.70x = 2,072,879.08
  5. Step 5: Solve for x
    x = 2,072,879.08/1,268.70
  6. Step 6: Final answer
    x = 1,633.86

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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.