Home / 1,109.61-1,531.23-612.24

Finding the Fourth Proportional to 1,109.61, 1,531.23 and 612.24

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Solution

The fourth proportional to 1,109.61, 1,531.23 and 612.24 is: 844.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109.61 : 1,531.23 = 612.24 : x
  2. Step 2: Convert to fraction form
    1,109.61/1,531.23 = 612.24/x
  3. Step 3: Cross multiply
    1,109.61x = 1,531.23 × 612.24
  4. Step 4: Simplify right side
    1,109.61x = 937,480.26
  5. Step 5: Solve for x
    x = 937,480.26/1,109.61
  6. Step 6: Final answer
    x = 844.87

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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.