Home / 3,780.12-5,216.90-2,208.72

Finding the Fourth Proportional to 3,780.12, 5,216.90 and 2,208.72

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Solution

The fourth proportional to 3,780.12, 5,216.90 and 2,208.72 is: 3,048.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.12 : 5,216.90 = 2,208.72 : x
  2. Step 2: Convert to fraction form
    3,780.12/5,216.90 = 2,208.72/x
  3. Step 3: Cross multiply
    3,780.12x = 5,216.90 × 2,208.72
  4. Step 4: Simplify right side
    3,780.12x = 11,522,660.32
  5. Step 5: Solve for x
    x = 11,522,660.32/3,780.12
  6. Step 6: Final answer
    x = 3,048.23

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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.