Home / 8,721.86-13,080.35-2,481.38

Finding the Fourth Proportional to 8,721.86, 13,080.35 and 2,481.38

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Solution

The fourth proportional to 8,721.86, 13,080.35 and 2,481.38 is: 3,721.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.86 : 13,080.35 = 2,481.38 : x
  2. Step 2: Convert to fraction form
    8,721.86/13,080.35 = 2,481.38/x
  3. Step 3: Cross multiply
    8,721.86x = 13,080.35 × 2,481.38
  4. Step 4: Simplify right side
    8,721.86x = 32,457,318.88
  5. Step 5: Solve for x
    x = 32,457,318.88/8,721.86
  6. Step 6: Final answer
    x = 3,721.38

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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.