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Finding the Fourth Proportional to 7,896.38, 11,840.43 and 3,943.40

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Solution

The fourth proportional to 7,896.38, 11,840.43 and 3,943.40 is: 5,913.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,896.38 : 11,840.43 = 3,943.40 : x
  2. Step 2: Convert to fraction form
    7,896.38/11,840.43 = 3,943.40/x
  3. Step 3: Cross multiply
    7,896.38x = 11,840.43 × 3,943.40
  4. Step 4: Simplify right side
    7,896.38x = 46,691,551.66
  5. Step 5: Solve for x
    x = 46,691,551.66/7,896.38
  6. Step 6: Final answer
    x = 5,913.03

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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.