Home / 1,623.15-2,433.23-789.72

Finding the Fourth Proportional to 1,623.15, 2,433.23 and 789.72

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Solution

The fourth proportional to 1,623.15, 2,433.23 and 789.72 is: 1,183.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,623.15 : 2,433.23 = 789.72 : x
  2. Step 2: Convert to fraction form
    1,623.15/2,433.23 = 789.72/x
  3. Step 3: Cross multiply
    1,623.15x = 2,433.23 × 789.72
  4. Step 4: Simplify right side
    1,623.15x = 1,921,570.40
  5. Step 5: Solve for x
    x = 1,921,570.40/1,623.15
  6. Step 6: Final answer
    x = 1,183.85

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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.