Home / 1,612.43-2,418.28-789.88

Finding the Fourth Proportional to 1,612.43, 2,418.28 and 789.88

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Solution

The fourth proportional to 1,612.43, 2,418.28 and 789.88 is: 1,184.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,612.43 : 2,418.28 = 789.88 : x
  2. Step 2: Convert to fraction form
    1,612.43/2,418.28 = 789.88/x
  3. Step 3: Cross multiply
    1,612.43x = 2,418.28 × 789.88
  4. Step 4: Simplify right side
    1,612.43x = 1,910,151.01
  5. Step 5: Solve for x
    x = 1,910,151.01/1,612.43
  6. Step 6: Final answer
    x = 1,184.64

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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.