Home / 1,162.24-1,743.36-431.62

Finding the Fourth Proportional to 1,162.24, 1,743.36 and 431.62

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Solution

The fourth proportional to 1,162.24, 1,743.36 and 431.62 is: 647.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,162.24 : 1,743.36 = 431.62 : x
  2. Step 2: Convert to fraction form
    1,162.24/1,743.36 = 431.62/x
  3. Step 3: Cross multiply
    1,162.24x = 1,743.36 × 431.62
  4. Step 4: Simplify right side
    1,162.24x = 752,469.04
  5. Step 5: Solve for x
    x = 752,469.04/1,162.24
  6. Step 6: Final answer
    x = 647.43

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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.