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Finding the Fourth Proportional to 3,452.80, 5,186.40 and 3,330.40

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Solution

The fourth proportional to 3,452.80, 5,186.40 and 3,330.40 is: 5,002.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,452.80 : 5,186.40 = 3,330.40 : x
  2. Step 2: Convert to fraction form
    3,452.80/5,186.40 = 3,330.40/x
  3. Step 3: Cross multiply
    3,452.80x = 5,186.40 × 3,330.40
  4. Step 4: Simplify right side
    3,452.80x = 17,272,786.56
  5. Step 5: Solve for x
    x = 17,272,786.56/3,452.80
  6. Step 6: Final answer
    x = 5,002.54

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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.