Home / 1,336.12-1,842.54-1,190.20

Finding the Fourth Proportional to 1,336.12, 1,842.54 and 1,190.20

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Solution

The fourth proportional to 1,336.12, 1,842.54 and 1,190.20 is: 1,641.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336.12 : 1,842.54 = 1,190.20 : x
  2. Step 2: Convert to fraction form
    1,336.12/1,842.54 = 1,190.20/x
  3. Step 3: Cross multiply
    1,336.12x = 1,842.54 × 1,190.20
  4. Step 4: Simplify right side
    1,336.12x = 2,192,991.11
  5. Step 5: Solve for x
    x = 2,192,991.11/1,336.12
  6. Step 6: Final answer
    x = 1,641.31

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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.