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Finding the Fourth Proportional to 3,431.52, 5,147.46 and 966.60

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Solution

The fourth proportional to 3,431.52, 5,147.46 and 966.60 is: 1,449.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.52 : 5,147.46 = 966.60 : x
  2. Step 2: Convert to fraction form
    3,431.52/5,147.46 = 966.60/x
  3. Step 3: Cross multiply
    3,431.52x = 5,147.46 × 966.60
  4. Step 4: Simplify right side
    3,431.52x = 4,975,534.84
  5. Step 5: Solve for x
    x = 4,975,534.84/3,431.52
  6. Step 6: Final answer
    x = 1,449.95

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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.