Home / 3,876.91-5,814.32-1,685.12

Finding the Fourth Proportional to 3,876.91, 5,814.32 and 1,685.12

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Solution

The fourth proportional to 3,876.91, 5,814.32 and 1,685.12 is: 2,527.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.91 : 5,814.32 = 1,685.12 : x
  2. Step 2: Convert to fraction form
    3,876.91/5,814.32 = 1,685.12/x
  3. Step 3: Cross multiply
    3,876.91x = 5,814.32 × 1,685.12
  4. Step 4: Simplify right side
    3,876.91x = 9,797,789.42
  5. Step 5: Solve for x
    x = 9,797,789.42/3,876.91
  6. Step 6: Final answer
    x = 2,527.22

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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.