Home / 6,279.90-9,422.04-2,120.36

Finding the Fourth Proportional to 6,279.90, 9,422.04 and 2,120.36

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Solution

The fourth proportional to 6,279.90, 9,422.04 and 2,120.36 is: 3,181.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,279.90 : 9,422.04 = 2,120.36 : x
  2. Step 2: Convert to fraction form
    6,279.90/9,422.04 = 2,120.36/x
  3. Step 3: Cross multiply
    6,279.90x = 9,422.04 × 2,120.36
  4. Step 4: Simplify right side
    6,279.90x = 19,978,116.73
  5. Step 5: Solve for x
    x = 19,978,116.73/6,279.90
  6. Step 6: Final answer
    x = 3,181.28

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1.5x scale

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.