Home / 1,728.45-2,591.19-1,631.79

Finding the Fourth Proportional to 1,728.45, 2,591.19 and 1,631.79

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Solution

The fourth proportional to 1,728.45, 2,591.19 and 1,631.79 is: 2,446.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.45 : 2,591.19 = 1,631.79 : x
  2. Step 2: Convert to fraction form
    1,728.45/2,591.19 = 1,631.79/x
  3. Step 3: Cross multiply
    1,728.45x = 2,591.19 × 1,631.79
  4. Step 4: Simplify right side
    1,728.45x = 4,228,277.93
  5. Step 5: Solve for x
    x = 4,228,277.93/1,728.45
  6. Step 6: Final answer
    x = 2,446.28

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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.