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Finding the Fourth Proportional to 5,147.47, 7,721.21 and 1,450.09

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Solution

The fourth proportional to 5,147.47, 7,721.21 and 1,450.09 is: 2,175.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.47 : 7,721.21 = 1,450.09 : x
  2. Step 2: Convert to fraction form
    5,147.47/7,721.21 = 1,450.09/x
  3. Step 3: Cross multiply
    5,147.47x = 7,721.21 × 1,450.09
  4. Step 4: Simplify right side
    5,147.47x = 11,196,449.41
  5. Step 5: Solve for x
    x = 11,196,449.41/5,147.47
  6. Step 6: Final answer
    x = 2,175.14

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Similar ratio
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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.