Home / 3,136.26-4,327.34-2,128.11

Finding the Fourth Proportional to 3,136.26, 4,327.34 and 2,128.11

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Solution

The fourth proportional to 3,136.26, 4,327.34 and 2,128.11 is: 2,936.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.26 : 4,327.34 = 2,128.11 : x
  2. Step 2: Convert to fraction form
    3,136.26/4,327.34 = 2,128.11/x
  3. Step 3: Cross multiply
    3,136.26x = 4,327.34 × 2,128.11
  4. Step 4: Simplify right side
    3,136.26x = 9,209,044.89
  5. Step 5: Solve for x
    x = 9,209,044.89/3,136.26
  6. Step 6: Final answer
    x = 2,936.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.