Home / 1,109.52-1,531.14-612.19

Finding the Fourth Proportional to 1,109.52, 1,531.14 and 612.19

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Solution

The fourth proportional to 1,109.52, 1,531.14 and 612.19 is: 844.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109.52 : 1,531.14 = 612.19 : x
  2. Step 2: Convert to fraction form
    1,109.52/1,531.14 = 612.19/x
  3. Step 3: Cross multiply
    1,109.52x = 1,531.14 × 612.19
  4. Step 4: Simplify right side
    1,109.52x = 937,348.60
  5. Step 5: Solve for x
    x = 937,348.60/1,109.52
  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.