Home / 2,838.30-4,257.45-2,679.90

Finding the Fourth Proportional to 2,838.30, 4,257.45 and 2,679.90

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Solution

The fourth proportional to 2,838.30, 4,257.45 and 2,679.90 is: 4,019.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,838.30 : 4,257.45 = 2,679.90 : x
  2. Step 2: Convert to fraction form
    2,838.30/4,257.45 = 2,679.90/x
  3. Step 3: Cross multiply
    2,838.30x = 4,257.45 × 2,679.90
  4. Step 4: Simplify right side
    2,838.30x = 11,409,540.26
  5. Step 5: Solve for x
    x = 11,409,540.26/2,838.30
  6. Step 6: Final answer
    x = 4,019.85

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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.