Home / 2,618.12-3,613.11-1,439.27

Finding the Fourth Proportional to 2,618.12, 3,613.11 and 1,439.27

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Solution

The fourth proportional to 2,618.12, 3,613.11 and 1,439.27 is: 1,986.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618.12 : 3,613.11 = 1,439.27 : x
  2. Step 2: Convert to fraction form
    2,618.12/3,613.11 = 1,439.27/x
  3. Step 3: Cross multiply
    2,618.12x = 3,613.11 × 1,439.27
  4. Step 4: Simplify right side
    2,618.12x = 5,200,230.92
  5. Step 5: Solve for x
    x = 5,200,230.92/2,618.12
  6. Step 6: Final answer
    x = 1,986.24

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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.