Home / 2,279.07-3,145.05-1,284.33

Finding the Fourth Proportional to 2,279.07, 3,145.05 and 1,284.33

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Solution

The fourth proportional to 2,279.07, 3,145.05 and 1,284.33 is: 1,772.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.07 : 3,145.05 = 1,284.33 : x
  2. Step 2: Convert to fraction form
    2,279.07/3,145.05 = 1,284.33/x
  3. Step 3: Cross multiply
    2,279.07x = 3,145.05 × 1,284.33
  4. Step 4: Simplify right side
    2,279.07x = 4,039,282.07
  5. Step 5: Solve for x
    x = 4,039,282.07/2,279.07
  6. Step 6: Final answer
    x = 1,772.34

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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.