Home / 2,782.41-3,839.70-1,603.45

Finding the Fourth Proportional to 2,782.41, 3,839.70 and 1,603.45

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Solution

The fourth proportional to 2,782.41, 3,839.70 and 1,603.45 is: 2,212.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.41 : 3,839.70 = 1,603.45 : x
  2. Step 2: Convert to fraction form
    2,782.41/3,839.70 = 1,603.45/x
  3. Step 3: Cross multiply
    2,782.41x = 3,839.70 × 1,603.45
  4. Step 4: Simplify right side
    2,782.41x = 6,156,766.97
  5. Step 5: Solve for x
    x = 6,156,766.97/2,782.41
  6. Step 6: Final answer
    x = 2,212.75

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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.