Home / 11,911.20-17,867.64-3,146

Finding the Fourth Proportional to 11,911.20, 17,867.64 and 3,146

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Solution

The fourth proportional to 11,911.20, 17,867.64 and 3,146 is: 4,719.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,911.20 : 17,867.64 = 3,146 : x
  2. Step 2: Convert to fraction form
    11,911.20/17,867.64 = 3,146/x
  3. Step 3: Cross multiply
    11,911.20x = 17,867.64 × 3,146
  4. Step 4: Simplify right side
    11,911.20x = 56,211,595.44
  5. Step 5: Solve for x
    x = 56,211,595.44/11,911.20
  6. Step 6: Final answer
    x = 4,719.22

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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.