Home / 1,282.23-1,921.86-624.43

Finding the Fourth Proportional to 1,282.23, 1,921.86 and 624.43

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Solution

The fourth proportional to 1,282.23, 1,921.86 and 624.43 is: 935.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282.23 : 1,921.86 = 624.43 : x
  2. Step 2: Convert to fraction form
    1,282.23/1,921.86 = 624.43/x
  3. Step 3: Cross multiply
    1,282.23x = 1,921.86 × 624.43
  4. Step 4: Simplify right side
    1,282.23x = 1,200,067.04
  5. Step 5: Solve for x
    x = 1,200,067.04/1,282.23
  6. Step 6: Final answer
    x = 935.93

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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.