Home / 1,622.42-2,238.92-923.79

Finding the Fourth Proportional to 1,622.42, 2,238.92 and 923.79

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Solution

The fourth proportional to 1,622.42, 2,238.92 and 923.79 is: 1,274.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,622.42 : 2,238.92 = 923.79 : x
  2. Step 2: Convert to fraction form
    1,622.42/2,238.92 = 923.79/x
  3. Step 3: Cross multiply
    1,622.42x = 2,238.92 × 923.79
  4. Step 4: Simplify right side
    1,622.42x = 2,068,291.91
  5. Step 5: Solve for x
    x = 2,068,291.91/1,622.42
  6. Step 6: Final answer
    x = 1,274.82

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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.