Home / 1,698.26-2,340.80-1,200.26

Finding the Fourth Proportional to 1,698.26, 2,340.80 and 1,200.26

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Solution

The fourth proportional to 1,698.26, 2,340.80 and 1,200.26 is: 1,654.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,698.26 : 2,340.80 = 1,200.26 : x
  2. Step 2: Convert to fraction form
    1,698.26/2,340.80 = 1,200.26/x
  3. Step 3: Cross multiply
    1,698.26x = 2,340.80 × 1,200.26
  4. Step 4: Simplify right side
    1,698.26x = 2,809,550.90
  5. Step 5: Solve for x
    x = 2,809,550.90/1,698.26
  6. Step 6: Final answer
    x = 1,654.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.