Home / 3,780.14-5,216.49-2,101.55

Finding the Fourth Proportional to 3,780.14, 5,216.49 and 2,101.55

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Solution

The fourth proportional to 3,780.14, 5,216.49 and 2,101.55 is: 2,900.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.14 : 5,216.49 = 2,101.55 : x
  2. Step 2: Convert to fraction form
    3,780.14/5,216.49 = 2,101.55/x
  3. Step 3: Cross multiply
    3,780.14x = 5,216.49 × 2,101.55
  4. Step 4: Simplify right side
    3,780.14x = 10,962,688.48
  5. Step 5: Solve for x
    x = 10,962,688.48/3,780.14
  6. Step 6: Final answer
    x = 2,900.08

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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.