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Finding the Fourth Proportional to 2,211.89, 3,317.88 and 751.04

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Solution

The fourth proportional to 2,211.89, 3,317.88 and 751.04 is: 1,126.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.89 : 3,317.88 = 751.04 : x
  2. Step 2: Convert to fraction form
    2,211.89/3,317.88 = 751.04/x
  3. Step 3: Cross multiply
    2,211.89x = 3,317.88 × 751.04
  4. Step 4: Simplify right side
    2,211.89x = 2,491,860.60
  5. Step 5: Solve for x
    x = 2,491,860.60/2,211.89
  6. Step 6: Final answer
    x = 1,126.58

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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.