Home / 1,211.14-1,817.12-724.33

Finding the Fourth Proportional to 1,211.14, 1,817.12 and 724.33

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Solution

The fourth proportional to 1,211.14, 1,817.12 and 724.33 is: 1,086.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211.14 : 1,817.12 = 724.33 : x
  2. Step 2: Convert to fraction form
    1,211.14/1,817.12 = 724.33/x
  3. Step 3: Cross multiply
    1,211.14x = 1,817.12 × 724.33
  4. Step 4: Simplify right side
    1,211.14x = 1,316,194.53
  5. Step 5: Solve for x
    x = 1,316,194.53/1,211.14
  6. Step 6: Final answer
    x = 1,086.74

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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.