Home / 2,861.12-3,943.36-2,613.12

Finding the Fourth Proportional to 2,861.12, 3,943.36 and 2,613.12

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Solution

The fourth proportional to 2,861.12, 3,943.36 and 2,613.12 is: 3,601.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.12 : 3,943.36 = 2,613.12 : x
  2. Step 2: Convert to fraction form
    2,861.12/3,943.36 = 2,613.12/x
  3. Step 3: Cross multiply
    2,861.12x = 3,943.36 × 2,613.12
  4. Step 4: Simplify right side
    2,861.12x = 10,304,472.88
  5. Step 5: Solve for x
    x = 10,304,472.88/2,861.12
  6. Step 6: Final answer
    x = 3,601.55

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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.