Home / 1,336.20-1,837.44-1,188.60

Finding the Fourth Proportional to 1,336.20, 1,837.44 and 1,188.60

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Solution

The fourth proportional to 1,336.20, 1,837.44 and 1,188.60 is: 1,634.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336.20 : 1,837.44 = 1,188.60 : x
  2. Step 2: Convert to fraction form
    1,336.20/1,837.44 = 1,188.60/x
  3. Step 3: Cross multiply
    1,336.20x = 1,837.44 × 1,188.60
  4. Step 4: Simplify right side
    1,336.20x = 2,183,981.18
  5. Step 5: Solve for x
    x = 2,183,981.18/1,336.20
  6. Step 6: Final answer
    x = 1,634.47

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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.