Home / 2,279.07-3,144.96-1,284.21

Finding the Fourth Proportional to 2,279.07, 3,144.96 and 1,284.21

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Solution

The fourth proportional to 2,279.07, 3,144.96 and 1,284.21 is: 1,772.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.07 : 3,144.96 = 1,284.21 : x
  2. Step 2: Convert to fraction form
    2,279.07/3,144.96 = 1,284.21/x
  3. Step 3: Cross multiply
    2,279.07x = 3,144.96 × 1,284.21
  4. Step 4: Simplify right side
    2,279.07x = 4,038,789.08
  5. Step 5: Solve for x
    x = 4,038,789.08/2,279.07
  6. Step 6: Final answer
    x = 1,772.12

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1.5x scale

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.