Home / 3,780.12-5,216.49-2,101.47

Finding the Fourth Proportional to 3,780.12, 5,216.49 and 2,101.47

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Solution

The fourth proportional to 3,780.12, 5,216.49 and 2,101.47 is: 2,899.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.12 : 5,216.49 = 2,101.47 : x
  2. Step 2: Convert to fraction form
    3,780.12/5,216.49 = 2,101.47/x
  3. Step 3: Cross multiply
    3,780.12x = 5,216.49 × 2,101.47
  4. Step 4: Simplify right side
    3,780.12x = 10,962,297.24
  5. Step 5: Solve for x
    x = 10,962,297.24/3,780.12
  6. Step 6: Final answer
    x = 2,899.99

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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.