Home / 1,827.11-2,739.85-1,279.55

Finding the Fourth Proportional to 1,827.11, 2,739.85 and 1,279.55

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Solution

The fourth proportional to 1,827.11, 2,739.85 and 1,279.55 is: 1,918.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,827.11 : 2,739.85 = 1,279.55 : x
  2. Step 2: Convert to fraction form
    1,827.11/2,739.85 = 1,279.55/x
  3. Step 3: Cross multiply
    1,827.11x = 2,739.85 × 1,279.55
  4. Step 4: Simplify right side
    1,827.11x = 3,505,758.17
  5. Step 5: Solve for x
    x = 3,505,758.17/1,827.11
  6. Step 6: Final answer
    x = 1,918.75

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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.