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Finding the Fourth Proportional to 6,720.49, 10,072.50 and 5,071.87

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Solution

The fourth proportional to 6,720.49, 10,072.50 and 5,071.87 is: 7,601.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,720.49 : 10,072.50 = 5,071.87 : x
  2. Step 2: Convert to fraction form
    6,720.49/10,072.50 = 5,071.87/x
  3. Step 3: Cross multiply
    6,720.49x = 10,072.50 × 5,071.87
  4. Step 4: Simplify right side
    6,720.49x = 51,086,410.58
  5. Step 5: Solve for x
    x = 51,086,410.58/6,720.49
  6. Step 6: Final answer
    x = 7,601.59

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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.