Home / 7,856.28-11,781.45-3,958.02

Finding the Fourth Proportional to 7,856.28, 11,781.45 and 3,958.02

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Solution

The fourth proportional to 7,856.28, 11,781.45 and 3,958.02 is: 5,935.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,856.28 : 11,781.45 = 3,958.02 : x
  2. Step 2: Convert to fraction form
    7,856.28/11,781.45 = 3,958.02/x
  3. Step 3: Cross multiply
    7,856.28x = 11,781.45 × 3,958.02
  4. Step 4: Simplify right side
    7,856.28x = 46,631,214.73
  5. Step 5: Solve for x
    x = 46,631,214.73/7,856.28
  6. Step 6: Final answer
    x = 5,935.53

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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.