Home / 1,109.62-1,531.19-612.23

Finding the Fourth Proportional to 1,109.62, 1,531.19 and 612.23

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Solution

The fourth proportional to 1,109.62, 1,531.19 and 612.23 is: 844.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109.62 : 1,531.19 = 612.23 : x
  2. Step 2: Convert to fraction form
    1,109.62/1,531.19 = 612.23/x
  3. Step 3: Cross multiply
    1,109.62x = 1,531.19 × 612.23
  4. Step 4: Simplify right side
    1,109.62x = 937,429.74
  5. Step 5: Solve for x
    x = 937,429.74/1,109.62
  6. Step 6: Final answer
    x = 844.82

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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.