Home / 1,639.26-2,459.46-1,200.96

Finding the Fourth Proportional to 1,639.26, 2,459.46 and 1,200.96

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Solution

The fourth proportional to 1,639.26, 2,459.46 and 1,200.96 is: 1,801.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.26 : 2,459.46 = 1,200.96 : x
  2. Step 2: Convert to fraction form
    1,639.26/2,459.46 = 1,200.96/x
  3. Step 3: Cross multiply
    1,639.26x = 2,459.46 × 1,200.96
  4. Step 4: Simplify right side
    1,639.26x = 2,953,713.08
  5. Step 5: Solve for x
    x = 2,953,713.08/1,639.26
  6. Step 6: Final answer
    x = 1,801.86

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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.