Home / 5,172.72-7,759.20-1,475.28

Finding the Fourth Proportional to 5,172.72, 7,759.20 and 1,475.28

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Solution

The fourth proportional to 5,172.72, 7,759.20 and 1,475.28 is: 2,212.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.72 : 7,759.20 = 1,475.28 : x
  2. Step 2: Convert to fraction form
    5,172.72/7,759.20 = 1,475.28/x
  3. Step 3: Cross multiply
    5,172.72x = 7,759.20 × 1,475.28
  4. Step 4: Simplify right side
    5,172.72x = 11,446,992.58
  5. Step 5: Solve for x
    x = 11,446,992.58/5,172.72
  6. Step 6: Final answer
    x = 2,212.95

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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.