Home / 4,072.12-6,109.80-2,123.80

Finding the Fourth Proportional to 4,072.12, 6,109.80 and 2,123.80

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Solution

The fourth proportional to 4,072.12, 6,109.80 and 2,123.80 is: 3,186.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,072.12 : 6,109.80 = 2,123.80 : x
  2. Step 2: Convert to fraction form
    4,072.12/6,109.80 = 2,123.80/x
  3. Step 3: Cross multiply
    4,072.12x = 6,109.80 × 2,123.80
  4. Step 4: Simplify right side
    4,072.12x = 12,975,993.24
  5. Step 5: Solve for x
    x = 12,975,993.24/4,072.12
  6. Step 6: Final answer
    x = 3,186.54

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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.