Home / 1,226.12-1,838.92-393.04

Finding the Fourth Proportional to 1,226.12, 1,838.92 and 393.04

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Solution

The fourth proportional to 1,226.12, 1,838.92 and 393.04 is: 589.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226.12 : 1,838.92 = 393.04 : x
  2. Step 2: Convert to fraction form
    1,226.12/1,838.92 = 393.04/x
  3. Step 3: Cross multiply
    1,226.12x = 1,838.92 × 393.04
  4. Step 4: Simplify right side
    1,226.12x = 722,769.12
  5. Step 5: Solve for x
    x = 722,769.12/1,226.12
  6. Step 6: Final answer
    x = 589.48

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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.