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Finding the Fourth Proportional to 3,387.46, 5,082.80 and 1,197.22

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Solution

The fourth proportional to 3,387.46, 5,082.80 and 1,197.22 is: 1,796.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.46 : 5,082.80 = 1,197.22 : x
  2. Step 2: Convert to fraction form
    3,387.46/5,082.80 = 1,197.22/x
  3. Step 3: Cross multiply
    3,387.46x = 5,082.80 × 1,197.22
  4. Step 4: Simplify right side
    3,387.46x = 6,085,229.82
  5. Step 5: Solve for x
    x = 6,085,229.82/3,387.46
  6. Step 6: Final answer
    x = 1,796.40

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Half scale
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Double 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.