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Finding the Fourth Proportional to 3,479.71, 5,217.46 and 1,368.81

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Solution

The fourth proportional to 3,479.71, 5,217.46 and 1,368.81 is: 2,052.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,479.71 : 5,217.46 = 1,368.81 : x
  2. Step 2: Convert to fraction form
    3,479.71/5,217.46 = 1,368.81/x
  3. Step 3: Cross multiply
    3,479.71x = 5,217.46 × 1,368.81
  4. Step 4: Simplify right side
    3,479.71x = 7,141,711.42
  5. Step 5: Solve for x
    x = 7,141,711.42/3,479.71
  6. Step 6: Final answer
    x = 2,052.39

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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.