Home / 1,645.13-2,463.64-1,276.85

Finding the Fourth Proportional to 1,645.13, 2,463.64 and 1,276.85

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Solution

The fourth proportional to 1,645.13, 2,463.64 and 1,276.85 is: 1,912.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.13 : 2,463.64 = 1,276.85 : x
  2. Step 2: Convert to fraction form
    1,645.13/2,463.64 = 1,276.85/x
  3. Step 3: Cross multiply
    1,645.13x = 2,463.64 × 1,276.85
  4. Step 4: Simplify right side
    1,645.13x = 3,145,698.73
  5. Step 5: Solve for x
    x = 3,145,698.73/1,645.13
  6. Step 6: Final answer
    x = 1,912.13

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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.