Home / 2,861.23-4,280.55-2,169.85

Finding the Fourth Proportional to 2,861.23, 4,280.55 and 2,169.85

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Solution

The fourth proportional to 2,861.23, 4,280.55 and 2,169.85 is: 3,246.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.23 : 4,280.55 = 2,169.85 : x
  2. Step 2: Convert to fraction form
    2,861.23/4,280.55 = 2,169.85/x
  3. Step 3: Cross multiply
    2,861.23x = 4,280.55 × 2,169.85
  4. Step 4: Simplify right side
    2,861.23x = 9,288,151.42
  5. Step 5: Solve for x
    x = 9,288,151.42/2,861.23
  6. Step 6: Final answer
    x = 3,246.21

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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.