Home / 3,520.96-4,861.20-2,195.20

Finding the Fourth Proportional to 3,520.96, 4,861.20 and 2,195.20

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Solution

The fourth proportional to 3,520.96, 4,861.20 and 2,195.20 is: 3,030.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.96 : 4,861.20 = 2,195.20 : x
  2. Step 2: Convert to fraction form
    3,520.96/4,861.20 = 2,195.20/x
  3. Step 3: Cross multiply
    3,520.96x = 4,861.20 × 2,195.20
  4. Step 4: Simplify right side
    3,520.96x = 10,671,306.24
  5. Step 5: Solve for x
    x = 10,671,306.24/3,520.96
  6. Step 6: Final answer
    x = 3,030.79

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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.