Home / 8,712.13-13,067.99-2,138.28

Finding the Fourth Proportional to 8,712.13, 13,067.99 and 2,138.28

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Solution

The fourth proportional to 8,712.13, 13,067.99 and 2,138.28 is: 3,207.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.13 : 13,067.99 = 2,138.28 : x
  2. Step 2: Convert to fraction form
    8,712.13/13,067.99 = 2,138.28/x
  3. Step 3: Cross multiply
    8,712.13x = 13,067.99 × 2,138.28
  4. Step 4: Simplify right side
    8,712.13x = 27,943,021.66
  5. Step 5: Solve for x
    x = 27,943,021.66/8,712.13
  6. Step 6: Final answer
    x = 3,207.37

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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.