Home / 4,209.78-6,318.57-2,131.25

Finding the Fourth Proportional to 4,209.78, 6,318.57 and 2,131.25

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Solution

The fourth proportional to 4,209.78, 6,318.57 and 2,131.25 is: 3,198.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,209.78 : 6,318.57 = 2,131.25 : x
  2. Step 2: Convert to fraction form
    4,209.78/6,318.57 = 2,131.25/x
  3. Step 3: Cross multiply
    4,209.78x = 6,318.57 × 2,131.25
  4. Step 4: Simplify right side
    4,209.78x = 13,466,420.72
  5. Step 5: Solve for x
    x = 13,466,420.72/4,209.78
  6. Step 6: Final answer
    x = 3,198.84

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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.