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Finding the Fourth Proportional to 6,978.93, 10,469.36 and 2,047.87

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Solution

The fourth proportional to 6,978.93, 10,469.36 and 2,047.87 is: 3,072.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,978.93 : 10,469.36 = 2,047.87 : x
  2. Step 2: Convert to fraction form
    6,978.93/10,469.36 = 2,047.87/x
  3. Step 3: Cross multiply
    6,978.93x = 10,469.36 × 2,047.87
  4. Step 4: Simplify right side
    6,978.93x = 21,439,888.26
  5. Step 5: Solve for x
    x = 21,439,888.26/6,978.93
  6. Step 6: Final answer
    x = 3,072.09

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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.