Home / 3,687.75-5,089.30-2,115.95

Finding the Fourth Proportional to 3,687.75, 5,089.30 and 2,115.95

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Solution

The fourth proportional to 3,687.75, 5,089.30 and 2,115.95 is: 2,920.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.75 : 5,089.30 = 2,115.95 : x
  2. Step 2: Convert to fraction form
    3,687.75/5,089.30 = 2,115.95/x
  3. Step 3: Cross multiply
    3,687.75x = 5,089.30 × 2,115.95
  4. Step 4: Simplify right side
    3,687.75x = 10,768,673.60
  5. Step 5: Solve for x
    x = 10,768,673.60/3,687.75
  6. Step 6: Final answer
    x = 2,920.12

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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.