Home / 6,453.12-9,679.80-2,070.60

Finding the Fourth Proportional to 6,453.12, 9,679.80 and 2,070.60

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Solution

The fourth proportional to 6,453.12, 9,679.80 and 2,070.60 is: 3,105.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,453.12 : 9,679.80 = 2,070.60 : x
  2. Step 2: Convert to fraction form
    6,453.12/9,679.80 = 2,070.60/x
  3. Step 3: Cross multiply
    6,453.12x = 9,679.80 × 2,070.60
  4. Step 4: Simplify right side
    6,453.12x = 20,042,993.88
  5. Step 5: Solve for x
    x = 20,042,993.88/6,453.12
  6. Step 6: Final answer
    x = 3,105.94

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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.