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Finding the Fourth Proportional to 7,128.71, 10,694.81 and 5,024.44

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Solution

The fourth proportional to 7,128.71, 10,694.81 and 5,024.44 is: 7,537.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.71 : 10,694.81 = 5,024.44 : x
  2. Step 2: Convert to fraction form
    7,128.71/10,694.81 = 5,024.44/x
  3. Step 3: Cross multiply
    7,128.71x = 10,694.81 × 5,024.44
  4. Step 4: Simplify right side
    7,128.71x = 53,735,431.16
  5. Step 5: Solve for x
    x = 53,735,431.16/7,128.71
  6. Step 6: Final answer
    x = 7,537.89

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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.