Home / 9,198.72-12,694.56-5,220

Finding the Fourth Proportional to 9,198.72, 12,694.56 and 5,220

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Solution

The fourth proportional to 9,198.72, 12,694.56 and 5,220 is: 7,203.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,198.72 : 12,694.56 = 5,220 : x
  2. Step 2: Convert to fraction form
    9,198.72/12,694.56 = 5,220/x
  3. Step 3: Cross multiply
    9,198.72x = 12,694.56 × 5,220
  4. Step 4: Simplify right side
    9,198.72x = 66,265,603.20
  5. Step 5: Solve for x
    x = 66,265,603.20/9,198.72
  6. Step 6: Final answer
    x = 7,203.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.