Home / 1,336.45-2,004.67-411.75

Finding the Fourth Proportional to 1,336.45, 2,004.67 and 411.75

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Solution

The fourth proportional to 1,336.45, 2,004.67 and 411.75 is: 617.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336.45 : 2,004.67 = 411.75 : x
  2. Step 2: Convert to fraction form
    1,336.45/2,004.67 = 411.75/x
  3. Step 3: Cross multiply
    1,336.45x = 2,004.67 × 411.75
  4. Step 4: Simplify right side
    1,336.45x = 825,421.07
  5. Step 5: Solve for x
    x = 825,421.07/1,336.45
  6. Step 6: Final answer
    x = 617.62

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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.