Home / 3,179.52-4,390.11-2,742.12

Finding the Fourth Proportional to 3,179.52, 4,390.11 and 2,742.12

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Solution

The fourth proportional to 3,179.52, 4,390.11 and 2,742.12 is: 3,786.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.52 : 4,390.11 = 2,742.12 : x
  2. Step 2: Convert to fraction form
    3,179.52/4,390.11 = 2,742.12/x
  3. Step 3: Cross multiply
    3,179.52x = 4,390.11 × 2,742.12
  4. Step 4: Simplify right side
    3,179.52x = 12,038,208.43
  5. Step 5: Solve for x
    x = 12,038,208.43/3,179.52
  6. Step 6: Final answer
    x = 3,786.17

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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.