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Finding the Fourth Proportional to 5,381.81, 8,072.79 and 3,544.69

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Solution

The fourth proportional to 5,381.81, 8,072.79 and 3,544.69 is: 5,317.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,381.81 : 8,072.79 = 3,544.69 : x
  2. Step 2: Convert to fraction form
    5,381.81/8,072.79 = 3,544.69/x
  3. Step 3: Cross multiply
    5,381.81x = 8,072.79 × 3,544.69
  4. Step 4: Simplify right side
    5,381.81x = 28,615,488.76
  5. Step 5: Solve for x
    x = 28,615,488.76/5,381.81
  6. Step 6: Final answer
    x = 5,317.08

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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.