Home / 6,122.70-9,171.90-3,345.30

Finding the Fourth Proportional to 6,122.70, 9,171.90 and 3,345.30

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Solution

The fourth proportional to 6,122.70, 9,171.90 and 3,345.30 is: 5,011.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,122.70 : 9,171.90 = 3,345.30 : x
  2. Step 2: Convert to fraction form
    6,122.70/9,171.90 = 3,345.30/x
  3. Step 3: Cross multiply
    6,122.70x = 9,171.90 × 3,345.30
  4. Step 4: Simplify right side
    6,122.70x = 30,682,757.07
  5. Step 5: Solve for x
    x = 30,682,757.07/6,122.70
  6. Step 6: Final answer
    x = 5,011.31

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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.