Home / 8,136.90-12,207.09-2,871.71

Finding the Fourth Proportional to 8,136.90, 12,207.09 and 2,871.71

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Solution

The fourth proportional to 8,136.90, 12,207.09 and 2,871.71 is: 4,308.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,136.90 : 12,207.09 = 2,871.71 : x
  2. Step 2: Convert to fraction form
    8,136.90/12,207.09 = 2,871.71/x
  3. Step 3: Cross multiply
    8,136.90x = 12,207.09 × 2,871.71
  4. Step 4: Simplify right side
    8,136.90x = 35,055,161.39
  5. Step 5: Solve for x
    x = 35,055,161.39/8,136.90
  6. Step 6: Final answer
    x = 4,308.17

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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.