Home / 8,380.83-12,571.23-2,140.84

Finding the Fourth Proportional to 8,380.83, 12,571.23 and 2,140.84

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Solution

The fourth proportional to 8,380.83, 12,571.23 and 2,140.84 is: 3,211.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,380.83 : 12,571.23 = 2,140.84 : x
  2. Step 2: Convert to fraction form
    8,380.83/12,571.23 = 2,140.84/x
  3. Step 3: Cross multiply
    8,380.83x = 12,571.23 × 2,140.84
  4. Step 4: Simplify right side
    8,380.83x = 26,912,962.36
  5. Step 5: Solve for x
    x = 26,912,962.36/8,380.83
  6. Step 6: Final answer
    x = 3,211.25

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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.