Home / 6,422.80-9,615.30-4,786.60

Finding the Fourth Proportional to 6,422.80, 9,615.30 and 4,786.60

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Solution

The fourth proportional to 6,422.80, 9,615.30 and 4,786.60 is: 7,165.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,422.80 : 9,615.30 = 4,786.60 : x
  2. Step 2: Convert to fraction form
    6,422.80/9,615.30 = 4,786.60/x
  3. Step 3: Cross multiply
    6,422.80x = 9,615.30 × 4,786.60
  4. Step 4: Simplify right side
    6,422.80x = 46,024,594.98
  5. Step 5: Solve for x
    x = 46,024,594.98/6,422.80
  6. Step 6: Final answer
    x = 7,165.81

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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.