Home / 8,431.12-11,631.18-5,071.96

Finding the Fourth Proportional to 8,431.12, 11,631.18 and 5,071.96

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Solution

The fourth proportional to 8,431.12, 11,631.18 and 5,071.96 is: 6,997.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.12 : 11,631.18 = 5,071.96 : x
  2. Step 2: Convert to fraction form
    8,431.12/11,631.18 = 5,071.96/x
  3. Step 3: Cross multiply
    8,431.12x = 11,631.18 × 5,071.96
  4. Step 4: Simplify right side
    8,431.12x = 58,992,879.71
  5. Step 5: Solve for x
    x = 58,992,879.71/8,431.12
  6. Step 6: Final answer
    x = 6,997.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.