Home / 6,120.12-9,179.91-1,960.32

Finding the Fourth Proportional to 6,120.12, 9,179.91 and 1,960.32

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Solution

The fourth proportional to 6,120.12, 9,179.91 and 1,960.32 is: 2,940.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,120.12 : 9,179.91 = 1,960.32 : x
  2. Step 2: Convert to fraction form
    6,120.12/9,179.91 = 1,960.32/x
  3. Step 3: Cross multiply
    6,120.12x = 9,179.91 × 1,960.32
  4. Step 4: Simplify right side
    6,120.12x = 17,995,561.17
  5. Step 5: Solve for x
    x = 17,995,561.17/6,120.12
  6. Step 6: Final answer
    x = 2,940.39

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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.