Home / 1,268.88-1,900.22-1,145.76

Finding the Fourth Proportional to 1,268.88, 1,900.22 and 1,145.76

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Solution

The fourth proportional to 1,268.88, 1,900.22 and 1,145.76 is: 1,715.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268.88 : 1,900.22 = 1,145.76 : x
  2. Step 2: Convert to fraction form
    1,268.88/1,900.22 = 1,145.76/x
  3. Step 3: Cross multiply
    1,268.88x = 1,900.22 × 1,145.76
  4. Step 4: Simplify right side
    1,268.88x = 2,177,190.34
  5. Step 5: Solve for x
    x = 2,177,190.34/1,268.88
  6. Step 6: Final answer
    x = 1,715.84

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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.