Home / 3,187.80-4,781.70-1,241.37

Finding the Fourth Proportional to 3,187.80, 4,781.70 and 1,241.37

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Solution

The fourth proportional to 3,187.80, 4,781.70 and 1,241.37 is: 1,862.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.80 : 4,781.70 = 1,241.37 : x
  2. Step 2: Convert to fraction form
    3,187.80/4,781.70 = 1,241.37/x
  3. Step 3: Cross multiply
    3,187.80x = 4,781.70 × 1,241.37
  4. Step 4: Simplify right side
    3,187.80x = 5,935,858.93
  5. Step 5: Solve for x
    x = 5,935,858.93/3,187.80
  6. Step 6: Final answer
    x = 1,862.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.