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Finding the Fourth Proportional to 3,167.64, 4,751.46 and 859.14

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Solution

The fourth proportional to 3,167.64, 4,751.46 and 859.14 is: 1,288.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,167.64 : 4,751.46 = 859.14 : x
  2. Step 2: Convert to fraction form
    3,167.64/4,751.46 = 859.14/x
  3. Step 3: Cross multiply
    3,167.64x = 4,751.46 × 859.14
  4. Step 4: Simplify right side
    3,167.64x = 4,082,169.34
  5. Step 5: Solve for x
    x = 4,082,169.34/3,167.64
  6. Step 6: Final answer
    x = 1,288.71

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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.