Home / 1,794.28-2,689.50-1,279.72

Finding the Fourth Proportional to 1,794.28, 2,689.50 and 1,279.72

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Solution

The fourth proportional to 1,794.28, 2,689.50 and 1,279.72 is: 1,918.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,794.28 : 2,689.50 = 1,279.72 : x
  2. Step 2: Convert to fraction form
    1,794.28/2,689.50 = 1,279.72/x
  3. Step 3: Cross multiply
    1,794.28x = 2,689.50 × 1,279.72
  4. Step 4: Simplify right side
    1,794.28x = 3,441,806.94
  5. Step 5: Solve for x
    x = 3,441,806.94/1,794.28
  6. Step 6: Final answer
    x = 1,918.21

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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.