Home / 3,103.82-4,284.20-2,042.40

Finding the Fourth Proportional to 3,103.82, 4,284.20 and 2,042.40

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Solution

The fourth proportional to 3,103.82, 4,284.20 and 2,042.40 is: 2,819.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,103.82 : 4,284.20 = 2,042.40 : x
  2. Step 2: Convert to fraction form
    3,103.82/4,284.20 = 2,042.40/x
  3. Step 3: Cross multiply
    3,103.82x = 4,284.20 × 2,042.40
  4. Step 4: Simplify right side
    3,103.82x = 8,750,047.90
  5. Step 5: Solve for x
    x = 8,750,047.90/3,103.82
  6. Step 6: Final answer
    x = 2,819.12

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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.