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Finding the Fourth Proportional to 4,011.91, 5,991.21 and 3,968.47

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Solution

The fourth proportional to 4,011.91, 5,991.21 and 3,968.47 is: 5,926.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,011.91 : 5,991.21 = 3,968.47 : x
  2. Step 2: Convert to fraction form
    4,011.91/5,991.21 = 3,968.47/x
  3. Step 3: Cross multiply
    4,011.91x = 5,991.21 × 3,968.47
  4. Step 4: Simplify right side
    4,011.91x = 23,775,927.23
  5. Step 5: Solve for x
    x = 23,775,927.23/4,011.91
  6. Step 6: Final answer
    x = 5,926.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.