Home / 6,112.08-9,168.12-2,215.20

Finding the Fourth Proportional to 6,112.08, 9,168.12 and 2,215.20

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Solution

The fourth proportional to 6,112.08, 9,168.12 and 2,215.20 is: 3,322.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,112.08 : 9,168.12 = 2,215.20 : x
  2. Step 2: Convert to fraction form
    6,112.08/9,168.12 = 2,215.20/x
  3. Step 3: Cross multiply
    6,112.08x = 9,168.12 × 2,215.20
  4. Step 4: Simplify right side
    6,112.08x = 20,309,219.42
  5. Step 5: Solve for x
    x = 20,309,219.42/6,112.08
  6. Step 6: Final answer
    x = 3,322.80

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Half scale
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Similar ratio
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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.