Home / 3,601.40-5,402.09-2,780.87

Finding the Fourth Proportional to 3,601.40, 5,402.09 and 2,780.87

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Solution

The fourth proportional to 3,601.40, 5,402.09 and 2,780.87 is: 4,171.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,601.40 : 5,402.09 = 2,780.87 : x
  2. Step 2: Convert to fraction form
    3,601.40/5,402.09 = 2,780.87/x
  3. Step 3: Cross multiply
    3,601.40x = 5,402.09 × 2,780.87
  4. Step 4: Simplify right side
    3,601.40x = 15,022,489.96
  5. Step 5: Solve for x
    x = 15,022,489.96/3,601.40
  6. Step 6: Final answer
    x = 4,171.30

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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.