Home / 2,116.67-3,174.66-729.95

Finding the Fourth Proportional to 2,116.67, 3,174.66 and 729.95

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Solution

The fourth proportional to 2,116.67, 3,174.66 and 729.95 is: 1,094.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.67 : 3,174.66 = 729.95 : x
  2. Step 2: Convert to fraction form
    2,116.67/3,174.66 = 729.95/x
  3. Step 3: Cross multiply
    2,116.67x = 3,174.66 × 729.95
  4. Step 4: Simplify right side
    2,116.67x = 2,317,327.19
  5. Step 5: Solve for x
    x = 2,317,327.19/2,116.67
  6. Step 6: Final answer
    x = 1,094.80

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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.