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Finding the Fourth Proportional to 7,756, 11,638.04 and 4,248.56

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Solution

The fourth proportional to 7,756, 11,638.04 and 4,248.56 is: 6,375.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,756 : 11,638.04 = 4,248.56 : x
  2. Step 2: Convert to fraction form
    7,756/11,638.04 = 4,248.56/x
  3. Step 3: Cross multiply
    7,756x = 11,638.04 × 4,248.56
  4. Step 4: Simplify right side
    7,756x = 49,444,911.22
  5. Step 5: Solve for x
    x = 49,444,911.22/7,756
  6. Step 6: Final answer
    x = 6,375.05

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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.