Home / 3,240.20-4,861.84-1,679.92

Finding the Fourth Proportional to 3,240.20, 4,861.84 and 1,679.92

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Solution

The fourth proportional to 3,240.20, 4,861.84 and 1,679.92 is: 2,520.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.20 : 4,861.84 = 1,679.92 : x
  2. Step 2: Convert to fraction form
    3,240.20/4,861.84 = 1,679.92/x
  3. Step 3: Cross multiply
    3,240.20x = 4,861.84 × 1,679.92
  4. Step 4: Simplify right side
    3,240.20x = 8,167,502.25
  5. Step 5: Solve for x
    x = 8,167,502.25/3,240.20
  6. Step 6: Final answer
    x = 2,520.68

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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.