Home / 3,781.98-5,218.35-2,289.99

Finding the Fourth Proportional to 3,781.98, 5,218.35 and 2,289.99

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Solution

The fourth proportional to 3,781.98, 5,218.35 and 2,289.99 is: 3,159.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.98 : 5,218.35 = 2,289.99 : x
  2. Step 2: Convert to fraction form
    3,781.98/5,218.35 = 2,289.99/x
  3. Step 3: Cross multiply
    3,781.98x = 5,218.35 × 2,289.99
  4. Step 4: Simplify right side
    3,781.98x = 11,949,969.32
  5. Step 5: Solve for x
    x = 11,949,969.32/3,781.98
  6. Step 6: Final answer
    x = 3,159.71

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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.