Home / 8,721.44-13,082.21-2,147.58

Finding the Fourth Proportional to 8,721.44, 13,082.21 and 2,147.58

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Solution

The fourth proportional to 8,721.44, 13,082.21 and 2,147.58 is: 3,221.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.44 : 13,082.21 = 2,147.58 : x
  2. Step 2: Convert to fraction form
    8,721.44/13,082.21 = 2,147.58/x
  3. Step 3: Cross multiply
    8,721.44x = 13,082.21 × 2,147.58
  4. Step 4: Simplify right side
    8,721.44x = 28,095,097.92
  5. Step 5: Solve for x
    x = 28,095,097.92/8,721.44
  6. Step 6: Final answer
    x = 3,221.38

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1.5x scale

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.