Home / 1,912.08-2,638.32-1,165.44

Finding the Fourth Proportional to 1,912.08, 2,638.32 and 1,165.44

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Solution

The fourth proportional to 1,912.08, 2,638.32 and 1,165.44 is: 1,608.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.08 : 2,638.32 = 1,165.44 : x
  2. Step 2: Convert to fraction form
    1,912.08/2,638.32 = 1,165.44/x
  3. Step 3: Cross multiply
    1,912.08x = 2,638.32 × 1,165.44
  4. Step 4: Simplify right side
    1,912.08x = 3,074,803.66
  5. Step 5: Solve for x
    x = 3,074,803.66/1,912.08
  6. Step 6: Final answer
    x = 1,608.09

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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.