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Finding the Fourth Proportional to 3,242, 4,863.72 and 1,190

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Solution

The fourth proportional to 3,242, 4,863.72 and 1,190 is: 1,785.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,242 : 4,863.72 = 1,190 : x
  2. Step 2: Convert to fraction form
    3,242/4,863.72 = 1,190/x
  3. Step 3: Cross multiply
    3,242x = 4,863.72 × 1,190
  4. Step 4: Simplify right side
    3,242x = 5,787,826.80
  5. Step 5: Solve for x
    x = 5,787,826.80/3,242
  6. Step 6: Final answer
    x = 1,785.26

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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.