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Finding the Fourth Proportional to 8,958.88, 13,436.40 and 3,412

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Solution

The fourth proportional to 8,958.88, 13,436.40 and 3,412 is: 5,117.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,958.88 : 13,436.40 = 3,412 : x
  2. Step 2: Convert to fraction form
    8,958.88/13,436.40 = 3,412/x
  3. Step 3: Cross multiply
    8,958.88x = 13,436.40 × 3,412
  4. Step 4: Simplify right side
    8,958.88x = 45,844,996.80
  5. Step 5: Solve for x
    x = 45,844,996.80/8,958.88
  6. Step 6: Final answer
    x = 5,117.27

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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.