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Finding the Fourth Proportional to 3,199.48, 4,799.18 and 859.41

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Solution

The fourth proportional to 3,199.48, 4,799.18 and 859.41 is: 1,289.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,199.48 : 4,799.18 = 859.41 : x
  2. Step 2: Convert to fraction form
    3,199.48/4,799.18 = 859.41/x
  3. Step 3: Cross multiply
    3,199.48x = 4,799.18 × 859.41
  4. Step 4: Simplify right side
    3,199.48x = 4,124,465.43
  5. Step 5: Solve for x
    x = 4,124,465.43/3,199.48
  6. Step 6: Final answer
    x = 1,289.11

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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.