Home / 1,220.88-1,673.82-1,199.04

Finding the Fourth Proportional to 1,220.88, 1,673.82 and 1,199.04

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Solution

The fourth proportional to 1,220.88, 1,673.82 and 1,199.04 is: 1,643.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220.88 : 1,673.82 = 1,199.04 : x
  2. Step 2: Convert to fraction form
    1,220.88/1,673.82 = 1,199.04/x
  3. Step 3: Cross multiply
    1,220.88x = 1,673.82 × 1,199.04
  4. Step 4: Simplify right side
    1,220.88x = 2,006,977.13
  5. Step 5: Solve for x
    x = 2,006,977.13/1,220.88
  6. Step 6: Final answer
    x = 1,643.88

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.