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Finding the Fourth Proportional to 8,811.03, 13,215.87 and 3,261.77

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Solution

The fourth proportional to 8,811.03, 13,215.87 and 3,261.77 is: 4,892.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.03 : 13,215.87 = 3,261.77 : x
  2. Step 2: Convert to fraction form
    8,811.03/13,215.87 = 3,261.77/x
  3. Step 3: Cross multiply
    8,811.03x = 13,215.87 × 3,261.77
  4. Step 4: Simplify right side
    8,811.03x = 43,107,062.21
  5. Step 5: Solve for x
    x = 43,107,062.21/8,811.03
  6. Step 6: Final answer
    x = 4,892.40

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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.