Home / 2,860.11-4,286.52-1,215

Finding the Fourth Proportional to 2,860.11, 4,286.52 and 1,215

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Solution

The fourth proportional to 2,860.11, 4,286.52 and 1,215 is: 1,820.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.11 : 4,286.52 = 1,215 : x
  2. Step 2: Convert to fraction form
    2,860.11/4,286.52 = 1,215/x
  3. Step 3: Cross multiply
    2,860.11x = 4,286.52 × 1,215
  4. Step 4: Simplify right side
    2,860.11x = 5,208,121.80
  5. Step 5: Solve for x
    x = 5,208,121.80/2,860.11
  6. Step 6: Final answer
    x = 1,820.95

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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.