Home / 2,905.06-4,012.30-1,914.75

Finding the Fourth Proportional to 2,905.06, 4,012.30 and 1,914.75

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Solution

The fourth proportional to 2,905.06, 4,012.30 and 1,914.75 is: 2,644.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.06 : 4,012.30 = 1,914.75 : x
  2. Step 2: Convert to fraction form
    2,905.06/4,012.30 = 1,914.75/x
  3. Step 3: Cross multiply
    2,905.06x = 4,012.30 × 1,914.75
  4. Step 4: Simplify right side
    2,905.06x = 7,682,551.43
  5. Step 5: Solve for x
    x = 7,682,551.43/2,905.06
  6. Step 6: Final answer
    x = 2,644.54

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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.