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Finding the Fourth Proportional to 3,171.88, 4,751.18 and 2,011.88

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Solution

The fourth proportional to 3,171.88, 4,751.18 and 2,011.88 is: 3,013.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.88 : 4,751.18 = 2,011.88 : x
  2. Step 2: Convert to fraction form
    3,171.88/4,751.18 = 2,011.88/x
  3. Step 3: Cross multiply
    3,171.88x = 4,751.18 × 2,011.88
  4. Step 4: Simplify right side
    3,171.88x = 9,558,804.02
  5. Step 5: Solve for x
    x = 9,558,804.02/3,171.88
  6. Step 6: Final answer
    x = 3,013.61

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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.