Home / 8,631.54-11,906.67-5,181.24

Finding the Fourth Proportional to 8,631.54, 11,906.67 and 5,181.24

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Solution

The fourth proportional to 8,631.54, 11,906.67 and 5,181.24 is: 7,147.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.54 : 11,906.67 = 5,181.24 : x
  2. Step 2: Convert to fraction form
    8,631.54/11,906.67 = 5,181.24/x
  3. Step 3: Cross multiply
    8,631.54x = 11,906.67 × 5,181.24
  4. Step 4: Simplify right side
    8,631.54x = 61,691,314.87
  5. Step 5: Solve for x
    x = 61,691,314.87/8,631.54
  6. Step 6: Final answer
    x = 7,147.20

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1.5x scale

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.