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Finding the Fourth Proportional to 7,856.58, 11,795.81 and 3,963.72

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Solution

The fourth proportional to 7,856.58, 11,795.81 and 3,963.72 is: 5,951.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,856.58 : 11,795.81 = 3,963.72 : x
  2. Step 2: Convert to fraction form
    7,856.58/11,795.81 = 3,963.72/x
  3. Step 3: Cross multiply
    7,856.58x = 11,795.81 × 3,963.72
  4. Step 4: Simplify right side
    7,856.58x = 46,755,268.19
  5. Step 5: Solve for x
    x = 46,755,268.19/7,856.58
  6. Step 6: Final answer
    x = 5,951.10

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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.