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Finding the Fourth Proportional to 3,993.55, 5,989.55 and 1,527.78

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Solution

The fourth proportional to 3,993.55, 5,989.55 and 1,527.78 is: 2,291.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,993.55 : 5,989.55 = 1,527.78 : x
  2. Step 2: Convert to fraction form
    3,993.55/5,989.55 = 1,527.78/x
  3. Step 3: Cross multiply
    3,993.55x = 5,989.55 × 1,527.78
  4. Step 4: Simplify right side
    3,993.55x = 9,150,714.70
  5. Step 5: Solve for x
    x = 9,150,714.70/3,993.55
  6. Step 6: Final answer
    x = 2,291.37

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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.