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Finding the Fourth Proportional to 3,910.86, 5,867.25 and 1,137.55

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Solution

The fourth proportional to 3,910.86, 5,867.25 and 1,137.55 is: 1,706.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.86 : 5,867.25 = 1,137.55 : x
  2. Step 2: Convert to fraction form
    3,910.86/5,867.25 = 1,137.55/x
  3. Step 3: Cross multiply
    3,910.86x = 5,867.25 × 1,137.55
  4. Step 4: Simplify right side
    3,910.86x = 6,674,313.79
  5. Step 5: Solve for x
    x = 6,674,313.79/3,910.86
  6. Step 6: Final answer
    x = 1,706.61

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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.