Home / 6,418.80-9,628.20-6,078.60

Finding the Fourth Proportional to 6,418.80, 9,628.20 and 6,078.60

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Solution

The fourth proportional to 6,418.80, 9,628.20 and 6,078.60 is: 9,117.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,418.80 : 9,628.20 = 6,078.60 : x
  2. Step 2: Convert to fraction form
    6,418.80/9,628.20 = 6,078.60/x
  3. Step 3: Cross multiply
    6,418.80x = 9,628.20 × 6,078.60
  4. Step 4: Simplify right side
    6,418.80x = 58,525,976.52
  5. Step 5: Solve for x
    x = 58,525,976.52/6,418.80
  6. Step 6: Final answer
    x = 9,117.90

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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.