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Finding the Fourth Proportional to 3,199.45, 4,798.84 and 859.71

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Solution

The fourth proportional to 3,199.45, 4,798.84 and 859.71 is: 1,289.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,199.45 : 4,798.84 = 859.71 : x
  2. Step 2: Convert to fraction form
    3,199.45/4,798.84 = 859.71/x
  3. Step 3: Cross multiply
    3,199.45x = 4,798.84 × 859.71
  4. Step 4: Simplify right side
    3,199.45x = 4,125,610.74
  5. Step 5: Solve for x
    x = 4,125,610.74/3,199.45
  6. Step 6: Final answer
    x = 1,289.47

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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.