Home / 1,422.90-1,963.77-1,091.19

Finding the Fourth Proportional to 1,422.90, 1,963.77 and 1,091.19

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Solution

The fourth proportional to 1,422.90, 1,963.77 and 1,091.19 is: 1,505.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422.90 : 1,963.77 = 1,091.19 : x
  2. Step 2: Convert to fraction form
    1,422.90/1,963.77 = 1,091.19/x
  3. Step 3: Cross multiply
    1,422.90x = 1,963.77 × 1,091.19
  4. Step 4: Simplify right side
    1,422.90x = 2,142,846.19
  5. Step 5: Solve for x
    x = 2,142,846.19/1,422.90
  6. Step 6: Final answer
    x = 1,505.97

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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.