Home / 2,255.15-3,379.47-1,279.19

Finding the Fourth Proportional to 2,255.15, 3,379.47 and 1,279.19

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Solution

The fourth proportional to 2,255.15, 3,379.47 and 1,279.19 is: 1,916.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,255.15 : 3,379.47 = 1,279.19 : x
  2. Step 2: Convert to fraction form
    2,255.15/3,379.47 = 1,279.19/x
  3. Step 3: Cross multiply
    2,255.15x = 3,379.47 × 1,279.19
  4. Step 4: Simplify right side
    2,255.15x = 4,322,967.33
  5. Step 5: Solve for x
    x = 4,322,967.33/2,255.15
  6. Step 6: Final answer
    x = 1,916.94

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1.5x scale

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.