Home / 2,609.11-3,601.20-1,771.21

Finding the Fourth Proportional to 2,609.11, 3,601.20 and 1,771.21

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Solution

The fourth proportional to 2,609.11, 3,601.20 and 1,771.21 is: 2,444.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,609.11 : 3,601.20 = 1,771.21 : x
  2. Step 2: Convert to fraction form
    2,609.11/3,601.20 = 1,771.21/x
  3. Step 3: Cross multiply
    2,609.11x = 3,601.20 × 1,771.21
  4. Step 4: Simplify right side
    2,609.11x = 6,378,481.45
  5. Step 5: Solve for x
    x = 6,378,481.45/2,609.11
  6. Step 6: Final answer
    x = 2,444.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.