Home / 1,292.29-1,782.24-1,161.73

Finding the Fourth Proportional to 1,292.29, 1,782.24 and 1,161.73

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Solution

The fourth proportional to 1,292.29, 1,782.24 and 1,161.73 is: 1,602.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292.29 : 1,782.24 = 1,161.73 : x
  2. Step 2: Convert to fraction form
    1,292.29/1,782.24 = 1,161.73/x
  3. Step 3: Cross multiply
    1,292.29x = 1,782.24 × 1,161.73
  4. Step 4: Simplify right side
    1,292.29x = 2,070,481.68
  5. Step 5: Solve for x
    x = 2,070,481.68/1,292.29
  6. Step 6: Final answer
    x = 1,602.18

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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.