Home / 2,867.91-3,957.75-1,672.86

Finding the Fourth Proportional to 2,867.91, 3,957.75 and 1,672.86

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Solution

The fourth proportional to 2,867.91, 3,957.75 and 1,672.86 is: 2,308.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,867.91 : 3,957.75 = 1,672.86 : x
  2. Step 2: Convert to fraction form
    2,867.91/3,957.75 = 1,672.86/x
  3. Step 3: Cross multiply
    2,867.91x = 3,957.75 × 1,672.86
  4. Step 4: Simplify right side
    2,867.91x = 6,620,765.85
  5. Step 5: Solve for x
    x = 6,620,765.85/2,867.91
  6. Step 6: Final answer
    x = 2,308.57

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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.