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Finding the Fourth Proportional to 5,171.88, 7,136.89 and 2,934.30

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Solution

The fourth proportional to 5,171.88, 7,136.89 and 2,934.30 is: 4,049.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,171.88 : 7,136.89 = 2,934.30 : x
  2. Step 2: Convert to fraction form
    5,171.88/7,136.89 = 2,934.30/x
  3. Step 3: Cross multiply
    5,171.88x = 7,136.89 × 2,934.30
  4. Step 4: Simplify right side
    5,171.88x = 20,941,776.33
  5. Step 5: Solve for x
    x = 20,941,776.33/5,171.88
  6. Step 6: Final answer
    x = 4,049.16

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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.