Home / 1,367.29-2,047.84-1,121.25

Finding the Fourth Proportional to 1,367.29, 2,047.84 and 1,121.25

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Solution

The fourth proportional to 1,367.29, 2,047.84 and 1,121.25 is: 1,679.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,367.29 : 2,047.84 = 1,121.25 : x
  2. Step 2: Convert to fraction form
    1,367.29/2,047.84 = 1,121.25/x
  3. Step 3: Cross multiply
    1,367.29x = 2,047.84 × 1,121.25
  4. Step 4: Simplify right side
    1,367.29x = 2,296,140.60
  5. Step 5: Solve for x
    x = 2,296,140.60/1,367.29
  6. Step 6: Final answer
    x = 1,679.34

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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.