Home / 2,845.88-4,289.39-2,687

Finding the Fourth Proportional to 2,845.88, 4,289.39 and 2,687

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Solution

The fourth proportional to 2,845.88, 4,289.39 and 2,687 is: 4,049.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,845.88 : 4,289.39 = 2,687 : x
  2. Step 2: Convert to fraction form
    2,845.88/4,289.39 = 2,687/x
  3. Step 3: Cross multiply
    2,845.88x = 4,289.39 × 2,687
  4. Step 4: Simplify right side
    2,845.88x = 11,525,590.93
  5. Step 5: Solve for x
    x = 11,525,590.93/2,845.88
  6. Step 6: Final answer
    x = 4,049.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.