Home / 1,832.88-2,749.60-1,272.40

Finding the Fourth Proportional to 1,832.88, 2,749.60 and 1,272.40

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Solution

The fourth proportional to 1,832.88, 2,749.60 and 1,272.40 is: 1,908.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,832.88 : 2,749.60 = 1,272.40 : x
  2. Step 2: Convert to fraction form
    1,832.88/2,749.60 = 1,272.40/x
  3. Step 3: Cross multiply
    1,832.88x = 2,749.60 × 1,272.40
  4. Step 4: Simplify right side
    1,832.88x = 3,498,591.04
  5. Step 5: Solve for x
    x = 3,498,591.04/1,832.88
  6. Step 6: Final answer
    x = 1,908.79

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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.