Home / 2,982.88-4,102.68-2,392.12

Finding the Fourth Proportional to 2,982.88, 4,102.68 and 2,392.12

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Solution

The fourth proportional to 2,982.88, 4,102.68 and 2,392.12 is: 3,290.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,982.88 : 4,102.68 = 2,392.12 : x
  2. Step 2: Convert to fraction form
    2,982.88/4,102.68 = 2,392.12/x
  3. Step 3: Cross multiply
    2,982.88x = 4,102.68 × 2,392.12
  4. Step 4: Simplify right side
    2,982.88x = 9,814,102.88
  5. Step 5: Solve for x
    x = 9,814,102.88/2,982.88
  6. Step 6: Final answer
    x = 3,290.14

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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.