Home / 3,654.60-5,474.70-2,189.40

Finding the Fourth Proportional to 3,654.60, 5,474.70 and 2,189.40

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Solution

The fourth proportional to 3,654.60, 5,474.70 and 2,189.40 is: 3,279.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,654.60 : 5,474.70 = 2,189.40 : x
  2. Step 2: Convert to fraction form
    3,654.60/5,474.70 = 2,189.40/x
  3. Step 3: Cross multiply
    3,654.60x = 5,474.70 × 2,189.40
  4. Step 4: Simplify right side
    3,654.60x = 11,986,308.18
  5. Step 5: Solve for x
    x = 11,986,308.18/3,654.60
  6. Step 6: Final answer
    x = 3,279.79

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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.