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Finding the Fourth Proportional to 3,989.94, 5,986.12 and 2,043.52

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Solution

The fourth proportional to 3,989.94, 5,986.12 and 2,043.52 is: 3,065.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.94 : 5,986.12 = 2,043.52 : x
  2. Step 2: Convert to fraction form
    3,989.94/5,986.12 = 2,043.52/x
  3. Step 3: Cross multiply
    3,989.94x = 5,986.12 × 2,043.52
  4. Step 4: Simplify right side
    3,989.94x = 12,232,755.94
  5. Step 5: Solve for x
    x = 12,232,755.94/3,989.94
  6. Step 6: Final answer
    x = 3,065.90

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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.