Home / 2,269.80-3,131.94-1,274.70

Finding the Fourth Proportional to 2,269.80, 3,131.94 and 1,274.70

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Solution

The fourth proportional to 2,269.80, 3,131.94 and 1,274.70 is: 1,758.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,269.80 : 3,131.94 = 1,274.70 : x
  2. Step 2: Convert to fraction form
    2,269.80/3,131.94 = 1,274.70/x
  3. Step 3: Cross multiply
    2,269.80x = 3,131.94 × 1,274.70
  4. Step 4: Simplify right side
    2,269.80x = 3,992,283.92
  5. Step 5: Solve for x
    x = 3,992,283.92/2,269.80
  6. Step 6: Final answer
    x = 1,758.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.