Home / 2,780.24-3,836.68-1,601.36

Finding the Fourth Proportional to 2,780.24, 3,836.68 and 1,601.36

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Solution

The fourth proportional to 2,780.24, 3,836.68 and 1,601.36 is: 2,209.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.24 : 3,836.68 = 1,601.36 : x
  2. Step 2: Convert to fraction form
    2,780.24/3,836.68 = 1,601.36/x
  3. Step 3: Cross multiply
    2,780.24x = 3,836.68 × 1,601.36
  4. Step 4: Simplify right side
    2,780.24x = 6,143,905.88
  5. Step 5: Solve for x
    x = 6,143,905.88/2,780.24
  6. Step 6: Final answer
    x = 2,209.85

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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.