Home / 8,381.09-12,571.64-2,140.89

Finding the Fourth Proportional to 8,381.09, 12,571.64 and 2,140.89

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Solution

The fourth proportional to 8,381.09, 12,571.64 and 2,140.89 is: 3,211.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,381.09 : 12,571.64 = 2,140.89 : x
  2. Step 2: Convert to fraction form
    8,381.09/12,571.64 = 2,140.89/x
  3. Step 3: Cross multiply
    8,381.09x = 12,571.64 × 2,140.89
  4. Step 4: Simplify right side
    8,381.09x = 26,914,424.80
  5. Step 5: Solve for x
    x = 26,914,424.80/8,381.09
  6. Step 6: Final answer
    x = 3,211.33

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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.