Home / 8,211.27-12,317.33-3,998.40

Finding the Fourth Proportional to 8,211.27, 12,317.33 and 3,998.40

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Solution

The fourth proportional to 8,211.27, 12,317.33 and 3,998.40 is: 5,997.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,211.27 : 12,317.33 = 3,998.40 : x
  2. Step 2: Convert to fraction form
    8,211.27/12,317.33 = 3,998.40/x
  3. Step 3: Cross multiply
    8,211.27x = 12,317.33 × 3,998.40
  4. Step 4: Simplify right side
    8,211.27x = 49,249,612.27
  5. Step 5: Solve for x
    x = 49,249,612.27/8,211.27
  6. Step 6: Final answer
    x = 5,997.81

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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.