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Finding the Fourth Proportional to 3,950.63, 5,926.21 and 1,318.03

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Solution

The fourth proportional to 3,950.63, 5,926.21 and 1,318.03 is: 1,977.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,950.63 : 5,926.21 = 1,318.03 : x
  2. Step 2: Convert to fraction form
    3,950.63/5,926.21 = 1,318.03/x
  3. Step 3: Cross multiply
    3,950.63x = 5,926.21 × 1,318.03
  4. Step 4: Simplify right side
    3,950.63x = 7,810,904.46
  5. Step 5: Solve for x
    x = 7,810,904.46/3,950.63
  6. Step 6: Final answer
    x = 1,977.13

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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.