Home / 2,128.06-3,194.79-1,805.41

Finding the Fourth Proportional to 2,128.06, 3,194.79 and 1,805.41

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Solution

The fourth proportional to 2,128.06, 3,194.79 and 1,805.41 is: 2,710.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.06 : 3,194.79 = 1,805.41 : x
  2. Step 2: Convert to fraction form
    2,128.06/3,194.79 = 1,805.41/x
  3. Step 3: Cross multiply
    2,128.06x = 3,194.79 × 1,805.41
  4. Step 4: Simplify right side
    2,128.06x = 5,767,905.81
  5. Step 5: Solve for x
    x = 5,767,905.81/2,128.06
  6. Step 6: Final answer
    x = 2,710.41

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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.