Home / 3,780.38-5,216.70-2,101.76

Finding the Fourth Proportional to 3,780.38, 5,216.70 and 2,101.76

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Solution

The fourth proportional to 3,780.38, 5,216.70 and 2,101.76 is: 2,900.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.38 : 5,216.70 = 2,101.76 : x
  2. Step 2: Convert to fraction form
    3,780.38/5,216.70 = 2,101.76/x
  3. Step 3: Cross multiply
    3,780.38x = 5,216.70 × 2,101.76
  4. Step 4: Simplify right side
    3,780.38x = 10,964,251.39
  5. Step 5: Solve for x
    x = 10,964,251.39/3,780.38
  6. Step 6: Final answer
    x = 2,900.30

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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.