Home / 4,103.28-5,662.80-2,311.20

Finding the Fourth Proportional to 4,103.28, 5,662.80 and 2,311.20

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Solution

The fourth proportional to 4,103.28, 5,662.80 and 2,311.20 is: 3,189.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,103.28 : 5,662.80 = 2,311.20 : x
  2. Step 2: Convert to fraction form
    4,103.28/5,662.80 = 2,311.20/x
  3. Step 3: Cross multiply
    4,103.28x = 5,662.80 × 2,311.20
  4. Step 4: Simplify right side
    4,103.28x = 13,087,863.36
  5. Step 5: Solve for x
    x = 13,087,863.36/4,103.28
  6. Step 6: Final answer
    x = 3,189.61

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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.