Home / 5,422.09-8,127.65-2,133.89

Finding the Fourth Proportional to 5,422.09, 8,127.65 and 2,133.89

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Solution

The fourth proportional to 5,422.09, 8,127.65 and 2,133.89 is: 3,198.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,422.09 : 8,127.65 = 2,133.89 : x
  2. Step 2: Convert to fraction form
    5,422.09/8,127.65 = 2,133.89/x
  3. Step 3: Cross multiply
    5,422.09x = 8,127.65 × 2,133.89
  4. Step 4: Simplify right side
    5,422.09x = 17,343,500.39
  5. Step 5: Solve for x
    x = 17,343,500.39/5,422.09
  6. Step 6: Final answer
    x = 3,198.68

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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.