Home / 2,909.18-4,365.99-2,131.22

Finding the Fourth Proportional to 2,909.18, 4,365.99 and 2,131.22

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Solution

The fourth proportional to 2,909.18, 4,365.99 and 2,131.22 is: 3,198.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.18 : 4,365.99 = 2,131.22 : x
  2. Step 2: Convert to fraction form
    2,909.18/4,365.99 = 2,131.22/x
  3. Step 3: Cross multiply
    2,909.18x = 4,365.99 × 2,131.22
  4. Step 4: Simplify right side
    2,909.18x = 9,304,863.38
  5. Step 5: Solve for x
    x = 9,304,863.38/2,909.18
  6. Step 6: Final answer
    x = 3,198.45

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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.