Home / 1,922.40-2,651.92-1,292.99

Finding the Fourth Proportional to 1,922.40, 2,651.92 and 1,292.99

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Solution

The fourth proportional to 1,922.40, 2,651.92 and 1,292.99 is: 1,783.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,922.40 : 2,651.92 = 1,292.99 : x
  2. Step 2: Convert to fraction form
    1,922.40/2,651.92 = 1,292.99/x
  3. Step 3: Cross multiply
    1,922.40x = 2,651.92 × 1,292.99
  4. Step 4: Simplify right side
    1,922.40x = 3,428,906.04
  5. Step 5: Solve for x
    x = 3,428,906.04/1,922.40
  6. Step 6: Final answer
    x = 1,783.66

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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.