Home / 8,723.80-13,078.34-3,789.75

Finding the Fourth Proportional to 8,723.80, 13,078.34 and 3,789.75

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Solution

The fourth proportional to 8,723.80, 13,078.34 and 3,789.75 is: 5,681.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,723.80 : 13,078.34 = 3,789.75 : x
  2. Step 2: Convert to fraction form
    8,723.80/13,078.34 = 3,789.75/x
  3. Step 3: Cross multiply
    8,723.80x = 13,078.34 × 3,789.75
  4. Step 4: Simplify right side
    8,723.80x = 49,563,620.07
  5. Step 5: Solve for x
    x = 49,563,620.07/8,723.80
  6. Step 6: Final answer
    x = 5,681.43

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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.