Home / 1,905.44-2,858.68-1,385.96

Finding the Fourth Proportional to 1,905.44, 2,858.68 and 1,385.96

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Solution

The fourth proportional to 1,905.44, 2,858.68 and 1,385.96 is: 2,079.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.44 : 2,858.68 = 1,385.96 : x
  2. Step 2: Convert to fraction form
    1,905.44/2,858.68 = 1,385.96/x
  3. Step 3: Cross multiply
    1,905.44x = 2,858.68 × 1,385.96
  4. Step 4: Simplify right side
    1,905.44x = 3,962,016.13
  5. Step 5: Solve for x
    x = 3,962,016.13/1,905.44
  6. Step 6: Final answer
    x = 2,079.32

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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.