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Finding the Fourth Proportional to 3,973.68, 5,958.21 and 2,658.94

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Solution

The fourth proportional to 3,973.68, 5,958.21 and 2,658.94 is: 3,986.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,973.68 : 5,958.21 = 2,658.94 : x
  2. Step 2: Convert to fraction form
    3,973.68/5,958.21 = 2,658.94/x
  3. Step 3: Cross multiply
    3,973.68x = 5,958.21 × 2,658.94
  4. Step 4: Simplify right side
    3,973.68x = 15,842,493.11
  5. Step 5: Solve for x
    x = 15,842,493.11/3,973.68
  6. Step 6: Final answer
    x = 3,986.86

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1.5x scale

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.