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Finding the Fourth Proportional to 3,453.26, 5,179.95 and 856.13

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Solution

The fourth proportional to 3,453.26, 5,179.95 and 856.13 is: 1,284.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,453.26 : 5,179.95 = 856.13 : x
  2. Step 2: Convert to fraction form
    3,453.26/5,179.95 = 856.13/x
  3. Step 3: Cross multiply
    3,453.26x = 5,179.95 × 856.13
  4. Step 4: Simplify right side
    3,453.26x = 4,434,684.69
  5. Step 5: Solve for x
    x = 4,434,684.69/3,453.26
  6. Step 6: Final answer
    x = 1,284.20

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.