Home / 2,742.60-3,786.20-1,623.88

Finding the Fourth Proportional to 2,742.60, 3,786.20 and 1,623.88

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Solution

The fourth proportional to 2,742.60, 3,786.20 and 1,623.88 is: 2,241.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,742.60 : 3,786.20 = 1,623.88 : x
  2. Step 2: Convert to fraction form
    2,742.60/3,786.20 = 1,623.88/x
  3. Step 3: Cross multiply
    2,742.60x = 3,786.20 × 1,623.88
  4. Step 4: Simplify right side
    2,742.60x = 6,148,334.46
  5. Step 5: Solve for x
    x = 6,148,334.46/2,742.60
  6. Step 6: Final answer
    x = 2,241.79

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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.