Home / 3,780.09-5,216.86-2,101.84

Finding the Fourth Proportional to 3,780.09, 5,216.86 and 2,101.84

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Solution

The fourth proportional to 3,780.09, 5,216.86 and 2,101.84 is: 2,900.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.09 : 5,216.86 = 2,101.84 : x
  2. Step 2: Convert to fraction form
    3,780.09/5,216.86 = 2,101.84/x
  3. Step 3: Cross multiply
    3,780.09x = 5,216.86 × 2,101.84
  4. Step 4: Simplify right side
    3,780.09x = 10,964,994.61
  5. Step 5: Solve for x
    x = 10,964,994.61/3,780.09
  6. Step 6: Final answer
    x = 2,900.72

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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.