Home / 1,963.22-2,707.48-1,290.42

Finding the Fourth Proportional to 1,963.22, 2,707.48 and 1,290.42

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Solution

The fourth proportional to 1,963.22, 2,707.48 and 1,290.42 is: 1,779.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,963.22 : 2,707.48 = 1,290.42 : x
  2. Step 2: Convert to fraction form
    1,963.22/2,707.48 = 1,290.42/x
  3. Step 3: Cross multiply
    1,963.22x = 2,707.48 × 1,290.42
  4. Step 4: Simplify right side
    1,963.22x = 3,493,786.34
  5. Step 5: Solve for x
    x = 3,493,786.34/1,963.22
  6. Step 6: Final answer
    x = 1,779.62

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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.