Home / 1,905.08-2,858.46-1,211.56

Finding the Fourth Proportional to 1,905.08, 2,858.46 and 1,211.56

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Solution

The fourth proportional to 1,905.08, 2,858.46 and 1,211.56 is: 1,817.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.08 : 2,858.46 = 1,211.56 : x
  2. Step 2: Convert to fraction form
    1,905.08/2,858.46 = 1,211.56/x
  3. Step 3: Cross multiply
    1,905.08x = 2,858.46 × 1,211.56
  4. Step 4: Simplify right side
    1,905.08x = 3,463,195.80
  5. Step 5: Solve for x
    x = 3,463,195.80/1,905.08
  6. Step 6: Final answer
    x = 1,817.88

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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.