Home / 3,231.30-4,856.55-2,808.90

Finding the Fourth Proportional to 3,231.30, 4,856.55 and 2,808.90

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Solution

The fourth proportional to 3,231.30, 4,856.55 and 2,808.90 is: 4,221.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,231.30 : 4,856.55 = 2,808.90 : x
  2. Step 2: Convert to fraction form
    3,231.30/4,856.55 = 2,808.90/x
  3. Step 3: Cross multiply
    3,231.30x = 4,856.55 × 2,808.90
  4. Step 4: Simplify right side
    3,231.30x = 13,641,563.30
  5. Step 5: Solve for x
    x = 13,641,563.30/3,231.30
  6. Step 6: Final answer
    x = 4,221.70

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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.