Home / 8,721.06-13,081.59-2,147.37

Finding the Fourth Proportional to 8,721.06, 13,081.59 and 2,147.37

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Solution

The fourth proportional to 8,721.06, 13,081.59 and 2,147.37 is: 3,221.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.06 : 13,081.59 = 2,147.37 : x
  2. Step 2: Convert to fraction form
    8,721.06/13,081.59 = 2,147.37/x
  3. Step 3: Cross multiply
    8,721.06x = 13,081.59 × 2,147.37
  4. Step 4: Simplify right side
    8,721.06x = 28,091,013.92
  5. Step 5: Solve for x
    x = 28,091,013.92/8,721.06
  6. Step 6: Final answer
    x = 3,221.06

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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.