Home / 3,782.12-5,219.88-2,290.20

Finding the Fourth Proportional to 3,782.12, 5,219.88 and 2,290.20

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Solution

The fourth proportional to 3,782.12, 5,219.88 and 2,290.20 is: 3,160.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,782.12 : 5,219.88 = 2,290.20 : x
  2. Step 2: Convert to fraction form
    3,782.12/5,219.88 = 2,290.20/x
  3. Step 3: Cross multiply
    3,782.12x = 5,219.88 × 2,290.20
  4. Step 4: Simplify right side
    3,782.12x = 11,954,569.18
  5. Step 5: Solve for x
    x = 11,954,569.18/3,782.12
  6. Step 6: Final answer
    x = 3,160.81

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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.