Home / 2,103.22-2,902.31-1,218.85

Finding the Fourth Proportional to 2,103.22, 2,902.31 and 1,218.85

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Solution

The fourth proportional to 2,103.22, 2,902.31 and 1,218.85 is: 1,681.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,103.22 : 2,902.31 = 1,218.85 : x
  2. Step 2: Convert to fraction form
    2,103.22/2,902.31 = 1,218.85/x
  3. Step 3: Cross multiply
    2,103.22x = 2,902.31 × 1,218.85
  4. Step 4: Simplify right side
    2,103.22x = 3,537,480.54
  5. Step 5: Solve for x
    x = 3,537,480.54/2,103.22
  6. Step 6: Final answer
    x = 1,681.94

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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.