Home / 3,409.48-5,112.64-1,217.70

Finding the Fourth Proportional to 3,409.48, 5,112.64 and 1,217.70

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Solution

The fourth proportional to 3,409.48, 5,112.64 and 1,217.70 is: 1,825.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,409.48 : 5,112.64 = 1,217.70 : x
  2. Step 2: Convert to fraction form
    3,409.48/5,112.64 = 1,217.70/x
  3. Step 3: Cross multiply
    3,409.48x = 5,112.64 × 1,217.70
  4. Step 4: Simplify right side
    3,409.48x = 6,225,661.73
  5. Step 5: Solve for x
    x = 6,225,661.73/3,409.48
  6. Step 6: Final answer
    x = 1,825.99

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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.