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Finding the Fourth Proportional to 3,459.98, 5,189.98 and 1,512.12

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Solution

The fourth proportional to 3,459.98, 5,189.98 and 1,512.12 is: 2,268.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,459.98 : 5,189.98 = 1,512.12 : x
  2. Step 2: Convert to fraction form
    3,459.98/5,189.98 = 1,512.12/x
  3. Step 3: Cross multiply
    3,459.98x = 5,189.98 × 1,512.12
  4. Step 4: Simplify right side
    3,459.98x = 7,847,872.56
  5. Step 5: Solve for x
    x = 7,847,872.56/3,459.98
  6. Step 6: Final answer
    x = 2,268.18

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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.