Home / 1,368.54-2,049.86-1,272.35

Finding the Fourth Proportional to 1,368.54, 2,049.86 and 1,272.35

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Solution

The fourth proportional to 1,368.54, 2,049.86 and 1,272.35 is: 1,905.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368.54 : 2,049.86 = 1,272.35 : x
  2. Step 2: Convert to fraction form
    1,368.54/2,049.86 = 1,272.35/x
  3. Step 3: Cross multiply
    1,368.54x = 2,049.86 × 1,272.35
  4. Step 4: Simplify right side
    1,368.54x = 2,608,147.68
  5. Step 5: Solve for x
    x = 2,608,147.68/1,368.54
  6. Step 6: Final answer
    x = 1,905.79

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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.