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Finding the Fourth Proportional to 3,479.68, 5,214.98 and 3,039.87

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Solution

The fourth proportional to 3,479.68, 5,214.98 and 3,039.87 is: 4,555.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,479.68 : 5,214.98 = 3,039.87 : x
  2. Step 2: Convert to fraction form
    3,479.68/5,214.98 = 3,039.87/x
  3. Step 3: Cross multiply
    3,479.68x = 5,214.98 × 3,039.87
  4. Step 4: Simplify right side
    3,479.68x = 15,852,859.09
  5. Step 5: Solve for x
    x = 15,852,859.09/3,479.68
  6. Step 6: Final answer
    x = 4,555.84

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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.