Home / 5,209.11-7,813.70-2,131.11

Finding the Fourth Proportional to 5,209.11, 7,813.70 and 2,131.11

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Solution

The fourth proportional to 5,209.11, 7,813.70 and 2,131.11 is: 3,196.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.11 : 7,813.70 = 2,131.11 : x
  2. Step 2: Convert to fraction form
    5,209.11/7,813.70 = 2,131.11/x
  3. Step 3: Cross multiply
    5,209.11x = 7,813.70 × 2,131.11
  4. Step 4: Simplify right side
    5,209.11x = 16,651,854.21
  5. Step 5: Solve for x
    x = 16,651,854.21/5,209.11
  6. Step 6: Final answer
    x = 3,196.68

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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.