Home / 3,147.19-4,716.75-1,299.61

Finding the Fourth Proportional to 3,147.19, 4,716.75 and 1,299.61

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Solution

The fourth proportional to 3,147.19, 4,716.75 and 1,299.61 is: 1,947.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.19 : 4,716.75 = 1,299.61 : x
  2. Step 2: Convert to fraction form
    3,147.19/4,716.75 = 1,299.61/x
  3. Step 3: Cross multiply
    3,147.19x = 4,716.75 × 1,299.61
  4. Step 4: Simplify right side
    3,147.19x = 6,129,935.47
  5. Step 5: Solve for x
    x = 6,129,935.47/3,147.19
  6. Step 6: Final answer
    x = 1,947.75

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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.