Home / 1,936.90-2,905.35-1,645.30

Finding the Fourth Proportional to 1,936.90, 2,905.35 and 1,645.30

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Solution

The fourth proportional to 1,936.90, 2,905.35 and 1,645.30 is: 2,467.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,936.90 : 2,905.35 = 1,645.30 : x
  2. Step 2: Convert to fraction form
    1,936.90/2,905.35 = 1,645.30/x
  3. Step 3: Cross multiply
    1,936.90x = 2,905.35 × 1,645.30
  4. Step 4: Simplify right side
    1,936.90x = 4,780,172.36
  5. Step 5: Solve for x
    x = 4,780,172.36/1,936.90
  6. Step 6: Final answer
    x = 2,467.95

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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.