Home / 8,936.10-13,400.10-3,387.60

Finding the Fourth Proportional to 8,936.10, 13,400.10 and 3,387.60

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Solution

The fourth proportional to 8,936.10, 13,400.10 and 3,387.60 is: 5,079.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,936.10 : 13,400.10 = 3,387.60 : x
  2. Step 2: Convert to fraction form
    8,936.10/13,400.10 = 3,387.60/x
  3. Step 3: Cross multiply
    8,936.10x = 13,400.10 × 3,387.60
  4. Step 4: Simplify right side
    8,936.10x = 45,394,178.76
  5. Step 5: Solve for x
    x = 45,394,178.76/8,936.10
  6. Step 6: Final answer
    x = 5,079.86

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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.