Home / 2,679.20-4,018.80-2,654.90

Finding the Fourth Proportional to 2,679.20, 4,018.80 and 2,654.90

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Solution

The fourth proportional to 2,679.20, 4,018.80 and 2,654.90 is: 3,982.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.20 : 4,018.80 = 2,654.90 : x
  2. Step 2: Convert to fraction form
    2,679.20/4,018.80 = 2,654.90/x
  3. Step 3: Cross multiply
    2,679.20x = 4,018.80 × 2,654.90
  4. Step 4: Simplify right side
    2,679.20x = 10,669,512.12
  5. Step 5: Solve for x
    x = 10,669,512.12/2,679.20
  6. Step 6: Final answer
    x = 3,982.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.