Home / 5,209.61-7,814.45-2,131.61

Finding the Fourth Proportional to 5,209.61, 7,814.45 and 2,131.61

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Solution

The fourth proportional to 5,209.61, 7,814.45 and 2,131.61 is: 3,197.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.61 : 7,814.45 = 2,131.61 : x
  2. Step 2: Convert to fraction form
    5,209.61/7,814.45 = 2,131.61/x
  3. Step 3: Cross multiply
    5,209.61x = 7,814.45 × 2,131.61
  4. Step 4: Simplify right side
    5,209.61x = 16,657,359.76
  5. Step 5: Solve for x
    x = 16,657,359.76/5,209.61
  6. Step 6: Final answer
    x = 3,197.43

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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.