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Finding the Fourth Proportional to 7,808.76, 11,720.07 and 3,651.03

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Solution

The fourth proportional to 7,808.76, 11,720.07 and 3,651.03 is: 5,479.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,808.76 : 11,720.07 = 3,651.03 : x
  2. Step 2: Convert to fraction form
    7,808.76/11,720.07 = 3,651.03/x
  3. Step 3: Cross multiply
    7,808.76x = 11,720.07 × 3,651.03
  4. Step 4: Simplify right side
    7,808.76x = 42,790,327.17
  5. Step 5: Solve for x
    x = 42,790,327.17/7,808.76
  6. Step 6: Final answer
    x = 5,479.79

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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.