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Finding the Fourth Proportional to 4,779, 7,161.55 and 3,395.12

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Solution

The fourth proportional to 4,779, 7,161.55 and 3,395.12 is: 5,087.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,779 : 7,161.55 = 3,395.12 : x
  2. Step 2: Convert to fraction form
    4,779/7,161.55 = 3,395.12/x
  3. Step 3: Cross multiply
    4,779x = 7,161.55 × 3,395.12
  4. Step 4: Simplify right side
    4,779x = 24,314,277.34
  5. Step 5: Solve for x
    x = 24,314,277.34/4,779
  6. Step 6: Final answer
    x = 5,087.73

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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.