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Finding the Fourth Proportional to 8,157, 12,235.50 and 2,001

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Solution

The fourth proportional to 8,157, 12,235.50 and 2,001 is: 3,001.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,157 : 12,235.50 = 2,001 : x
  2. Step 2: Convert to fraction form
    8,157/12,235.50 = 2,001/x
  3. Step 3: Cross multiply
    8,157x = 12,235.50 × 2,001
  4. Step 4: Simplify right side
    8,157x = 24,483,235.50
  5. Step 5: Solve for x
    x = 24,483,235.50/8,157
  6. Step 6: Final answer
    x = 3,001.50

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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.