Home / 8,391.29-12,586.93-3,995.42

Finding the Fourth Proportional to 8,391.29, 12,586.93 and 3,995.42

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Solution

The fourth proportional to 8,391.29, 12,586.93 and 3,995.42 is: 5,993.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.29 : 12,586.93 = 3,995.42 : x
  2. Step 2: Convert to fraction form
    8,391.29/12,586.93 = 3,995.42/x
  3. Step 3: Cross multiply
    8,391.29x = 12,586.93 × 3,995.42
  4. Step 4: Simplify right side
    8,391.29x = 50,289,998.94
  5. Step 5: Solve for x
    x = 50,289,998.94/8,391.29
  6. Step 6: Final answer
    x = 5,993.12

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Double scale
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Similar ratio
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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.