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Finding the Fourth Proportional to 8,813.74, 13,208.70 and 3,261.88

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Solution

The fourth proportional to 8,813.74, 13,208.70 and 3,261.88 is: 4,888.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.74 : 13,208.70 = 3,261.88 : x
  2. Step 2: Convert to fraction form
    8,813.74/13,208.70 = 3,261.88/x
  3. Step 3: Cross multiply
    8,813.74x = 13,208.70 × 3,261.88
  4. Step 4: Simplify right side
    8,813.74x = 43,085,194.36
  5. Step 5: Solve for x
    x = 43,085,194.36/8,813.74
  6. Step 6: Final answer
    x = 4,888.41

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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.