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Finding the Fourth Proportional to 3,168.08, 4,751.48 and 859.04

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Solution

The fourth proportional to 3,168.08, 4,751.48 and 859.04 is: 1,288.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,168.08 : 4,751.48 = 859.04 : x
  2. Step 2: Convert to fraction form
    3,168.08/4,751.48 = 859.04/x
  3. Step 3: Cross multiply
    3,168.08x = 4,751.48 × 859.04
  4. Step 4: Simplify right side
    3,168.08x = 4,081,711.38
  5. Step 5: Solve for x
    x = 4,081,711.38/3,168.08
  6. Step 6: Final answer
    x = 1,288.39

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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.