Home / 1,938.35-2,676.31-1,192.55

Finding the Fourth Proportional to 1,938.35, 2,676.31 and 1,192.55

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Solution

The fourth proportional to 1,938.35, 2,676.31 and 1,192.55 is: 1,646.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.35 : 2,676.31 = 1,192.55 : x
  2. Step 2: Convert to fraction form
    1,938.35/2,676.31 = 1,192.55/x
  3. Step 3: Cross multiply
    1,938.35x = 2,676.31 × 1,192.55
  4. Step 4: Simplify right side
    1,938.35x = 3,191,617.13
  5. Step 5: Solve for x
    x = 3,191,617.13/1,938.35
  6. Step 6: Final answer
    x = 1,646.56

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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.